* Fri Jan 05 2018 alarrosa@suse.com
- Update to astropy 2.0.3
* Bugfixes:
* astropy.coordinates
- Ecliptic frame classes now support attributes v_x, v_y, v_z when using
with a Cartesian representation.
- Added a nicer error message when accidentally calling
frame.representation instead of frame.data in the context of methods
that use ._apply().
- Creating a new SkyCoord from a list of multiple SkyCoord objects now
yield the correct type of frame, and works at all for non-equatorial
frames.
- Improved accuracy of velocity calculation in
EarthLocation.get_gcrs_posvel.
- Improved accuracy of radial velocity corrections in
SkyCoord.radial_velocity_correction`.
- The precision of ecliptic frames is now much better, after removing the
nutation from the rotation and fixing the computation of the position
of the Sun.
* astropy.extern
- Version 0.2.1 of pytest-astropy is included as an external package.
* astropy.io.fits
- Fix writing the result of fitsdiff to file with --output-file.
- Fix a minor bug where FITS_rec instances can not be indexed with tuples
and other sequences that end up with a scalar.
* astropy.io.misc
- Fix ImportError when hdf5 is imported first in a fresh Python
interpreter in Python 3.
* astropy.nddata
- Suppress errors during WCS creation in CCDData.read().
- Fixed a problem with CCDData.read when the extension wasn't given and
the primary HDU contained no data but another HDU did. In that case the
header were not correctly combined.
* astropy.stats
- Fixed an issue where the biweight statistics functions would sometimes
cause runtime underflow/overflow errors for float32 input arrays.
* astropy.table
- Fixed a problem when printing a table when a column is deleted and
garbage-collected, and the format function caching mechanism happens to
re-use the same cache key.
- Fixed a problem when comparing a unicode masked column (on left side)
to a bytes masked column (on right side).
- Fixed a problem in comparing masked columns in bytes and unicode when
the unicode had masked entries.
* astropy.tests
- Fixed a bug that causes tests for rst files to not be run on certain
platforms.
- Fixed a bug that caused the doctestplus plugin to not work nicely with
the hypothesis package.
- Fixed a bug that meant that the data.astropy.org mirror could not be
used when using --remote-data=astropy.
- Support compatibility with new pytest-astropy plugins.
- When testing, astropy (or the package being tested) is now installed to
a temporary directory instead of copying the build. This allows entry
points to work correctly.
* astropy.time
- Initialization of Time instances now is consistent for all formats to
ensure that -0.5 <= jd2 < 0.5.
* astropy.units
- Ensure that Quantity slices can be set with objects that have a unit
attribute (such as Column).
* astropy.utils
- download_files_in_parallel now respects the given timeout value.
- Fixed bugs in remote data handling and also in IERS unit test related
to path URL, and URI normalization on Windows.
- Fixed a bug that caused get_pkg_data_fileobj to not work correctly when
used with non-local data from inside packages.
- Make sure get_pkg_data_fileobj fails if the URL can not be read, and
correctly falls back on the mirror if necessary.
- Fix the finddiff option in find_current_module to properly deal with
submodules.
- Fixed pyreadline import in utils.console.isatty for older IPython
versions on Windows.
* astropy.visualization
- Fixed the vertical orientation of the fits2bitmap output bitmap image
to match that of the FITS image.
- Added a workaround for a bug in matplotlib so that the fits2bitmap
script generates the correct output file type.
* Other Changes and Additions
* No longer require LaTeX to build the documentation locally and use
mathjax instead.
* Fixed broken links in the documentation.
* Ensured that all tests use the Astropy data mirror if needed.
* Thu Dec 14 2017 alarrosa@suse.com
- Remove test bcond since it wasn't really used at all
* Mon Dec 11 2017 alarrosa@suse.com
- Update to astropy 2.0.2 . Astropy 2.0 is a major release that adds
significant new functionality since the 1.3.x series of releases:
* New unit support for most models
* New image class CCDData added
* Experimental velocity support in astropy.coordinates
* New functionality in astropy.stats
* Easier use of efficient bytestring Table columns in Python 3
* New way to instantiate a BinTableHDU directly from a Table
* New printdiff convenience function for FITS
* New molar_mass_amu unit equivalency
* Store astropy core object types in ASCII ECSV table file
* Improvements to astropy.convolution
* No relativistic species by default in cosmological models
* Renamed/removed functionality
The full changelog can be read at
http://docs.astropy.org/en/stable/changelog.html .
* Fri Jun 23 2017 alarrosa@suse.com
- The latest astropy version requires liberfa 1.3.0 even if
it builds fine with 1.2.0 since it requires the eraEceq06 symbol.
* Thu May 25 2017 toddrme2178@gmail.com
- Implement single-spec version
- Fix source URL
- Update to version 1.3.2
* Lots of changes (see CHANGES.rst for details).
* Fri Nov 18 2016 asterios.dramis@gmail.com
- Replace cfitsio-devel, liberfa-devel, libexpat-devel and
libwcs-devel build requirements with pkgconfig() ones.
* Sat Jul 16 2016 asterios.dramis@gmail.com
- Update to version 1.2.1:
* Lots of changes (see CHANGES.rst for details).
- Added new build requirements python-Jinja2, python-PyYAML,
python-bleach, python-jupyter_ipython, python-mpmath,
python-psutil and python-scikit-image.
- Updated python-numpy-devel build requirement and python-numpy
runtime requirement to version >= 1.7.0.
- Updated python-six build and runtime requirement to version
>= 1.7.3.
- Removed not needed build requirements python-astropy-helpers and
python-numpy (indirect dependency).
- Removed not needed runtime requirements python-astropy-helpers.
- Added new Recommend entries python-PyYAML and
python-scikit-image.
* Tue Feb 02 2016 toddrme2178@gmail.com
- Add python-astropy-helpers and python-pandas dependencies.
* Thu Jan 28 2016 toddrme2178@gmail.com
- update to version 1.1.1
+ New Features
- ``astropy.io.registry``
* Allow ``pathlib.Path`` objects (available in Python 3.4 and later) for
specifying the file name in registry read / write functions. [#4405]
- ``astropy.utils``
* ``console.human_file_size`` now accepts quantities with byte-equivalent
units [#4373]
+ Bug Fixes
- ``astropy.analytic_functions``
* Fixed the blackbody functions' handling of overflows on some platforms
(Windows with MSVC, older Linux versions) with a buggy ``expm1`` function.
[#4393]
- ``astropy.io.fits``
* Fixed an bug where updates to string columns in FITS tables were not saved
on Python 3. [#4452]
+ Other Changes and Additions
- Updated bundled astropy-helpers to v1.1.1. [#4413]
- update to version 1.1
+ New Features
- ``astropy.config``
- Added new tools ``set_temp_config`` and ``set_temp_cache`` which can be
used either as function decorators or context managers to temporarily
use alternative directories in which to read/write the Astropy config
files and download caches respectively. This is especially useful for
testing, though ``set_temp_cache`` may also be used as a way to provide
an alternative (application specific) download cache for large data files,
rather than relying on the default cache location in users' home
directories. [#3975]
- ``astropy.constants``
- Added the Thomson scattering cross-section. [#3839]
- ``astropy.convolution``
- Added Moffat2DKernel. [#3965]
- ``astropy.coordinates``
- Added ``get_constellation`` function and ``SkyCoord.get_constellation``
convenience method to determine the constellation that a coordinate
is in. [#3758]
- Added ``PrecessedGeocentric`` frame, which is based on GCRS, but precessed
to a specific requested mean equinox. [#3758]
- Added ``Supergalactic`` frame to support de Vaucouleurs supergalactic
coordinates. [#3892]
- ``SphericalRepresentation`` now has a ``._unit_representation`` class attribute to specify
an equivalent UnitSphericalRepresentation. This allows subclasses of
representations to pair up correctly. [#3757]
- Added functionality to support getting the locations of observatories by
name. See ``astropy.coordinates.EarthLocation.of_site``. [#4042]
- Added ecliptic coordinates, including ``GeocentricTrueEcliptic``,
``BarycentricTrueEcliptic``, and ``HeliocentricTrueEcliptic``. [#3749]
- ``astropy.cosmology``
- Add Planck 2015 cosmology [#3476]
- Distance calculations now > 20-40x faster for the supplied
cosmologies due to implementing Cython scalar versions of
``FLRW.inv_efunc``.[#4127]
- ``astropy.io.ascii``
- Automatically use ``guess=False`` when reading if the file ``format`` is
provided and the format parameters are uniquely specified. This update
also removes duplicate format guesses to improve performance. [#3418]
- Calls to ascii.read() for fixed-width tables may now omit one of the keyword
arguments ``col_starts`` or ``col_ends``. Columns will be assumed to begin and
end immediately adjacent to each other. [#3657]
- Add a function ``get_read_trace()`` that returns a traceback of the
attempted read formats for the last call to ``astropy.io.ascii.read``. [#3688]
- Supports LZMA decompression via ``get_readable_fileobj`` [#3667]
- Allow ``-`` character is Sextractor format column names. [#4168]
- Improve DAOphot reader to read multi-aperture files [#3535, #4207]
- ``astropy.io.fits``
- Support reading and writing from bzip2 compressed files. i.e. ``.fits.bz2``
files. [#3789]
- Included a new command-line script called ``fitsinfo`` to display
a summary of the HDUs in one or more FITS files. [#3677]
- ``astropy.io.misc``
- Support saving all meta information, description and units of tables and columns
in HDF5 files [#4103]
- ``astropy.io.votable``
- A new method was added to ``astropy.io.votable.VOTable``,
``get_info_by_id`` to conveniently find an ``INFO`` element by its
``ID`` attribute. [#3633]
- Instances in the votable tree now have better ``__repr__``
methods. [#3639]
- ``astropy.logger.py``
- Added log levels (e.g., DEBUG, INFO, CRITICAL) to ``astropy.log`` [#3947]
- ``astropy.modeling``
- Added a new ``Parameter.validator`` interface for setting a validation
method on individual model parameters. See the ``Parameter``
documentation for more details. [#3910]
- The projection classes that are named based on the 3-letter FITS
WCS projections (e.g. ``Pix2Sky_TAN``) now have aliases using
longer, more descriptive names (e.g. ``Pix2Sky_Gnomonic``).
[#3583]
- All of the standard FITS WCS projection types have been
implemented in ``astropy.modeling.projections`` (by wrapping
WCSLIB). [#3906]
- Added ``Sersic1D`` and ``Sersic2D`` model classes. [#3889]
- Added the Voigt profile to existing models. [#3901]
- Added ``bounding_box`` property and ``render_model`` function [#3909]
- ``astropy.nddata``
- Added ``block_reduce`` and ``block_replicate`` functions. [#3453]
- ``extract_array`` now offers different options to deal with array
boundaries [#3727]
- Added a new ``Cutout2D`` class to create postage stamp image cutouts
with optional WCS propagation. [#3823]
- ``astropy.stats``
- Added ``sigma_lower`` and ``sigma_upper`` keywords to
``sigma_clip`` to allow for unsymmetric clipping. [#3595]
- Added ``cenfunc``, ``stdfunc``, and ``axis`` keywords to
``sigma_clipped_stats``. [#3792]
- ``sigma_clip`` automatically masks invalid input values (NaNs, Infs) before
performing the clipping [#4051]
- Added the ``histogram`` routine, which is similar to ``np.histogram`` but
includes several additional options for automatic determination of optimal
histogram bins. Associated helper routines include ``bayesian_blocks``,
``friedman_bin_width``, ``scott_bin_width``, and ``knuth_bin_width``.
This functionality was ported from the astroML_ library. [#3756]
- Added the ``bayesian_blocks`` routine, which implements a dynamic algorithm
for locating change-points in various time series. [#3756]
- A new function ``poisson_conf_interval()`` was added to allow easy calculation
of several standard formulae for the error bars on the mean of a Poisson variable
estimated from a single sample.
- ``astropy.table``
- ``add_column()`` and ``add_columns()`` now have ``rename_duplicate``
option to rename new column(s) rather than raise exception when its name
already exists. [#3592]
- Added ``Table.to_pandas`` and ``Table.from_pandas`` for converting to/from
pandas dataframes. [#3504]
- Initializing a ``Table`` with ``Column`` objects no longer requires
that the column ``name`` attribute be defined. [#3781]
- Added an ``info`` property to ``Table`` objects which provides configurable
summary information about the table and its columns. [#3731]
- Added an ``info`` property to column classes (``Column`` or mixins). This
serves a dual function of providing configurable summary information about
the column, and acting as a manager of column attributes such as
name, format, or description. [#3731]
- Updated table and column representation to use the ``dtype_info_name``
function for the dtype value. Removed the default "masked=False"
from the table representation. [#3868, #3869]
- Updated row representation to be consistent with the corresponding
table representation for that row. Added HTML representation so a
row displays nicely in IPython notebook.
- Added a new table indexing engine allowing for the creation of
indices on one or more columns of a table using ``add_index``. These
indices enable new functionality such as searching for rows by value
using ``loc`` and ``iloc``, as well as increased performance for
certain operations. [#3915]
- Added capability to include a structured array or recarray in a table
as a mixin column. This allows for an approximation of nested tables.
[#3925]
- Added ``keep_byteorder`` option to ``Table.as_array()``. See the
"API Changes" section below. [#4080]
- Added a new method ``Table.replace_column()`` to replace an existing
column with a new data column. [#4090]
- Added a ``tableclass`` option to ``Table.pformat()`` to allow specifying
a list of CSS classes added to the HTML table. [#4131]
- New CSS for jsviewer table [#2917, #2982, #4174]
- Added a new ``Table.show_in_notebook`` method that shows an interactive view
of a Table (similar to ``Table.show_in_browser(jsviewer=True)``) in an
Python/Jupyter notebook. [#4197]
- ``astropy.tests``
- Added new test config options, ``config_dir`` and ``cache_dir`` (these
can be edited in ``setup.cfg`` or as extra command-line options to
py.test) for setting the locations to use for the Astropy config files
and download caches (see also the related ``set_temp_config/cache``
features added in ``astropy.config``). [#3975]
- ``astropy.time``
- Add support for FITS standard time strings. [#3547]
- Allow the ``format`` attribute to be updated in place to change the
default representation of a ``Time`` object. [#3673]
- Add support for shape manipulation (reshape, ravel, etc.). [#3224]
- Add argmin, argmax, argsort, min, max, ptp, sort methods. [#3581]
- Add ``Time.to_datetime`` method for converting ``Time`` objects to
timezone-aware datetimes. [#4119]
- ``astropy.units``
- Added furlong to imperial units. [#3529]
- Added mil to imperial units. [#3716]
- Added stone to imperial units. [#4192]
- Added Earth Mass (``M_earth``) and Jupiter mass (``M_jup``) to units [#3907]
- Added support for functional units, in particular the logarithmic ones
``Magnitude``, ``Decibel``, and ``Dex``. [#1894]
- Quantities now work with the unit support in matplotlib. See
:ref:`plotting-quantities`. [#3981]
- ``astropy.utils``
- Added new ``OrderedDescriptor`` and ``OrderedDescriptorContainer`` utility
classes that make it easier to implement classes with declarative APIs,
wherein class-level attributes have an inherit "ordering" to them that is
specified by the order in which those attributes are defined in the class
declaration (by defining them using special descriptors that have
``OrderedDescriptor`` as a base class). See the API documentation for
these classes for more details. Coordinate frames and models now use this
interface. [#3679]
- The ``get_pkg_data_*`` functions now take an optional ``package`` argument
which allows specifying any package to read package data filenames or
content out of, as opposed to only being able to use data from the package
that the function is called from. [#4079]
- Added function ``dtype_info_name`` to the ``data_info`` module to provide
the name of a ``dtype`` for human-readable informational purposes. [#3868]
- Added ``classproperty`` decorator--this is to ``property`` as
``classmethod`` is to normal instance methods. [#3982]
- ``iers.open`` now handles network URLs, as well as local paths. [#3850]
- The ``astropy.utils.wraps`` decorator now takes an optional
``exclude_args`` argument not shared by the standard library ``wraps``
decorator (as it is unique to the Astropy version's ability of copying
the wrapped function's argument signature). ``exclude_args`` allows
certain arguments on the wrapped function to be excluded from the signature
of the wrapper function. This is particularly useful when wrapping an
instance method as a function (to exclude the ``self`` argument). [#4017]
- ``get_readable_fileobj`` can automatically decompress LZMA ('.xz')
files using the ``lzma`` module of Python 3.3+ or, when available, the
``backports.lzma`` package on earlier versions. [#3667]
- The ``resolve_name`` utility now accepts any number of additional
positional arguments that are automatically dotted together with the
first ``name`` argument. [#4083]
- Added ``is_url_in_cache`` for resolving paths to cached files via URLS
and checking if files exist. [#4095]
- Added a ``step`` argument to the ``ProgressBar.map`` method to give
users control over the update frequency of the progress bar. [#4191]
- ``astropy.visualization``
- Added a function / context manager ``quantity_support`` for enabling
seamless ploting of ``Quantity`` instances in matplotlib. [#3981]
- Added the ``hist`` function, which is similar to ``plt.hist`` but
includes several additional options for automatic determination of optimal
histogram bins. This functionality was ported from the astroML_ library.
[#3756]
- ``astropy.wcs``
- The included version of wcslib has been upgraded to 5.10. [#4239]
The minimum required version of wcslib in the 4.x series remains 4.24.
The minimum required version of wcslib in the 5.x series is
5.8. Building astropy against a wcslib 5.x prior to 5.8
will raise an ``ImportError`` when ``astropy.wcs`` is imported.
The wcslib changes relevant to astropy are:
- The FITS headers returned by ``astropy.wcs.WCS.to_header`` and
``astropy.wcs.WCS.to_header_string`` now include values with
more precision. This will result in numerical differences in
your results if you convert ``astropy.wcs.WCS`` objects to FITS
headers and use the results.
- ``astropy.wcs.WCS`` now recognises the ``TPV``, ``TPD``,
``TPU``, ``DSS``, ``TNX`` and ``ZPX`` polynomial distortions.
- Added relaxation flags to allow ``PC0i_0ja``, ``PV0j_0ma``, and
``PS0j_0ma`` (i.e. with leading zeroes on the index).
- Tidied up error reporting, particularly relating to translating
status returns from lower-level functions.
- Changed output formatting of floating point values in
``to_header``.
- Enhanced text representation of ``WCS`` objects. [#3604]
- The ``astropy.tests.helper`` module is now part of the public API (and has a
documentation page). This module was in previous releases of astropy,
but was not considered part of the public API until now. [#3890]
- There is a new function ``astropy.online_help`` to search the
astropy documentation and display the result in a web
browser. [#3642]
+ API changes
- ``astropy.cosmology``
- ``FLRW._tfunc`` and ``FLRW._xfunc`` are marked as deprecated. Users
should use the new public interfaces ``FLRW.lookback_time_integrand``
and ``FLRW.abs_distance_integrand`` instead. [#3767]
- ``astropy.io.ascii``
- The default header line processing was made to be consistent with data line
processing in that it now ignores blank lines that may have whitespace
characters. Any code that explicitly specifies a ``header_start`` value
for parsing a file with blank lines in the header containing whitespace will
need to be updated. [#2654]
- ``astropy.io.fits``
- The ``uint`` argument to ``fits.open`` is now True by default; that is,
arrays using the FITS unsigned integer convention will be detected, and
read as unsigned integers by default. A new config option for
``io.fits``, ``enable_uint``, can be changed to False to revert to the
original behavior of ignoring the ``uint`` convention unless it is
explicitly requested with ``uint=True``. [#3916]
- The ``ImageHDU.NumCode`` and ``ImageHDU.ImgCode`` attributes (and same
for other classes derived from ``_ImageBaseHDU``) are deprecated. Instead,
the ``astropy.io.fits`` module-level constants ``BITPIX2DTYPE`` and
``DTYPE2BITPIX`` can be used. [#3916]
- ``astropy.modeling``
- Note: Comparisons of model parameters with array-like values now
yields a Numpy boolean array as one would get with normal Numpy
array comparison. Previously this returned a scalar True or False,
with True only if the comparison was true for all elements compared,
which could lead to confusing circumstances. [#3912]
- Using ``model.inverse = None`` to reset a model's inverse to its
default is deprecated. In the future this syntax will explicitly make
a model not have an inverse (even if it has a default). Instead, use
``del model.inverse`` to reset a model's inverse to its default (if it
has a default, otherwise this just deletes any custom inverse that has
been assigned to the model and is still equivalent to setting
``model.inverse = None``). [#4236]
- Adds a ``model.has_user_inverse`` attribute which indicates whether or not
a user has assigned a custom inverse to ``model.inverse``. This is just
for informational purposes, for example, for software that introspects
model objects. [#4236]
- Renamed the parameters of ``RotateNative2Celestial`` and
``RotateCelestial2Native`` from ``phi``, ``theta``, ``psi`` to
``lon``, ``lat`` and ``lon_pole``. [#3578]
- Deprecated the ``Pix2Sky_AZP.check_mu`` and ``Sky2Pix_AZP.check_mu``
methods (these were obscure "accidentally public" methods that were
probably not used by anyone). [#3910]
- Added a phase parameter to the Sine1D model. [#3807]
- ``astropy.stats``
- Renamed the ``sigma_clip`` ``sig`` keyword as ``sigma``. [#3595]
- Changed the ``sigma_clip`` ``varfunc`` keyword to ``stdfunc``. [#3595]
- Renamed the ``sigma_clipped_stats`` ``mask_val`` keyword to
``mask_value``. [#3595]
- Changed the default ``iters`` keyword value to 5 in both the
``sigma_clip`` and ``sigma_clipped_stats`` functions. [#4067]
- ``astropy.table``
- ``Table.as_array()`` always returns a structured array with each column in
the system's native byte order. The optional ``keep_byteorder=True``
option will keep each column's data in its original byteorder. [#4080]
- ``Table.simple_table()`` now creates tables with int64 and float64 types
instead of int32 and float64. [#4114]
- ``astropy.time``
- The ``astropy_time`` attribute and time format has been removed from the
public interface. Existing code that instantiates a new time object using
``format='astropy_time'`` can simply omit the ``format``
specification. [#3857]
- ``astropy.units``
- Single-item ``Quantity`` instances with record ``dtype`` will now have
their ``isscalar`` property return ``True``, consistent with behaviour for
numpy arrays, where ``np.void`` records are considered scalar. [#3899]
- Three changes relating to the FITS unit format [#3993]:
- The FITS unit format will no longer parse an arbitrary number as a
scale value. It must be a power of 10 of the form ``10^^k``,
``10^k``, ``10+k``, ``10-k`` and ``10(k)``. [#3993]
- Scales that are powers of 10 can be written out. Previously, any
non-1.0 scale was rejected.
- The ``*`` character is accepted as a separator between the scale
and the units.
- Unit formatter classes now require the ``parse`` and ``to_string``
methods are now required to be classmethods (and the formatter
classes themselves are assumed to be singletons that are not
instantiated). As unit formatters are mostly an internal implementation
detail this is not likely to affect any users. [#4001]
- CGS E&M units are now defined separately from SI E&M units, and have
distinct physical types. [#4255]
- ``astropy.utils``
- All of the ``get_pkg_data_*`` functions take an optional ``package``
argument as their second positional argument. So any code that previously
passed other arguments to these functions as positional arguments might
break. Use keyword argument passing instead to mitigate this. [#4079]
- ``astropy.utils.iers`` now uses a ``QTable`` internally, which means that
the numerical columns are stored as ``Quantity``, with full support for
units. Furthermore, the ``ut1_utc`` method now returns a ``Quantity``
instead of a float or an array (as did ``pm_xy`` already). [#3223]
- ``astropy.utils.iers`` now throws an ``IERSRangeError``, a subclass
of ``IndexError``, rather than a raw ``IndexError``. This allows more
fine-grained catching of situations where a ``Time`` is beyond the range
of the loaded IERS tables. [#4302]
- ``astropy.wcs``
- When compiled with wcslib 5.9 or later, the FITS headers returned
by ``astropy.wcs.WCS.to_header`` and
``astropy.wcs.WCS.to_header_string`` now include values with more
precision. This will result in numerical differences in your
results if you convert ``astropy.wcs.WCS`` objects to FITS headers
and use the results.
- If NAXIS1 or NAXIS2 is not passed with the header object to
WCS.calc_footprint, a ValueError is raised. [#3557]
+ Bug fixes
- ``astropy.constants``
- The constants ``Ry`` and ``u`` are now properly used inside the
corresponding units. The latter have changed slightly as a result. [#4229]
- ``astropy.coordinates``
- Internally, ``coordinates`` now consistently uses the appropriate time
scales for using ERFA functions. [#4302]
- ``astropy.io.ascii``
- Fix a segfault in the fast C parser when one of the column headers
is empty [#3545].
- Fix several bugs that prevented the fast readers from being used
when guessing the file format. Also improved the read trace
information to better understand format guessing. [#4115]
- Fix an underlying problem that resulted in an uncaught TypeError
exception when reading a CDS-format file with guessing enabled. [#4120]
- ``astropy.modeling``
- ``Simplex`` fitter now correctly passes additional keywords arguments to
the scipy solver. [#3966]
- The keyword ``acc`` (for accuracy) is now correctly accepted by
``Simplex``. [#3966]
- ``astropy.units``
- The units ``Ryd`` and ``u`` are no longer hard-coded numbers, but depend
on the appropriate values in the ``constants`` module. As a result, these
units now imply slightly different conversions. [#4229]
+ Other Changes and Additions
- The ``./setup.py test`` command is now implemented in the ``astropy.tests``
module again (previously its implementation had been moved into
astropy-helpers). However, that made it difficult to synchronize changes
to the Astropy test runner with changes to the ``./setup.py test`` UI.
astropy-helpers v1.1 and above will detect this implementation of the
``test`` command, when present, and use it instead of the old version that
was included in astropy-helpers (most users will not notice any difference
as a result of this change). [#4020]
- The repr for ``Table`` no longer displays ``masked=False`` since tables
are not masked by default anyway. [#3869]
- The version of ``PLY`` that ships with astropy has been updated to 3.6.
- WCSAxes is now required for doc builds. [#4074]
- Updated ``astropy.tests`` test runner code to work with Coverage v4.0 when
generating test coverage reports. [#4176]
- The migration guide from pre-v0.4 coordinates has been removed to avoid
cluttering the ``astropy.coordinates`` documentation with increasingly
irrelevant material. To see the migration guide, we recommend you simply look
to the archived documentation for previous versions, e.g.
http://docs.astropy.org/en/v1.0/coordinates/index.html#migrating-from-pre-v0-4-coordinates
[#4203]
- In ``astropy.coordinates``, the transformations between GCRS, CIRS,
and ITRS have been adjusted to more logically reflect the order in
which they actually apply. This should not affect most coordinate
transformations, but may affect code that is especially sensitive to
machine precision effects that change when the order in which
transformations occur is changed. [#4255]
- update to version 1.0.8 (2016-01-08)
+ Bug Fixes
- ``astropy.io.fits``
- Fixed an bug where updates to string columns in FITS tables were not saved
on Python 3. [#4452]
- ``astropy.units``
- In-place peak-to-peak calculations now work on ``Quantity``. [#4442]
- ``astropy.utils``
- Fixed ``find_api_page`` to work correctly on python 3.x [#4378]
- update to version 1.0.7:
* New Features
+ astropy.time
Fix incorrect value attribute for epoch formats like "unix" when
scale is different from the class epoch_scale. [#4313]
* Bug Fixes
+ astropy.coordinates
Pickling of EarthLocation instances now also works on Python
2. [#4304]
+ astropy.io.fits
o Fixed a regression that could cause writes of large FITS files
to be truncated. [#4307]
o Astropy v1.0.6 included a fix (#4228) for an obscure case where
the TDIM of a table column is smaller than the repeat count of
its data format. This updates that fix in such a way that it
works with Numpy 1.10 as well. [#4266]
o Fix fast writer so bytestring column output is not prefixed by
'b' in Python 3. [#4350]
+ astropy.table
o Fix a bug when pickling a Table with mixin columns
(e.g. Time). [#4098]
+ astropy.utils
o Fixed an issue where if ipython is installed but ipykernel is
not installed then importing astropy from the ipython console
gave an IPython.kernel deprecation warning. [#4279]
o Fixed crash that could occur in ProgressBar when astropy is
imported in an IPython startup script. [#4274]
- update to version 1.0.6:
* astropy.analytic_functions
+ Fixed blackbody analytic functions to properly support arrays of
temperatures. [#4251]
* astropy.coordinates
+ Fixed errors in transformations for objects within a few AU of
the Earth. Included substansive changes to transformation
machinery that may change distances at levels ~machine precision
for other objects. [#4254]
* astropy.io.fits
+ fitsdiff and related functions now do a better job reporting
differences between values that are different types but have the
same representation (ex: the string '0' versus the number
0). [#4122]
+ Miscellaneous fixes for supporting Numpy 1.10. [#4228]
+ Fixed an issue where writing a column of unicode strings to a
FITS table resulted in a quadrupling of size of the column
(i.e. the format of the FITS column was 4 characters for every
one in the original strings). [#4228]
+ Added support for an obscure case (but nonetheless allowed by the
FITS standard) where a column has some TDIMn keyword, but a
repeat count in the TFORMn column greater than the number of
elements implied by the TDIMn. For example TFORMn = 100I, but
TDIMn = '(5,5)'. In this case the TDIMn implies 5x5 arrays in the
column, but the TFORMn implies a 100 element 1-D array in the
column. In this case the TDIM takes precedence, and the remaining
bytes in the column are ignored. [#4228]
* astropy.io.votable
+ Fixed crash with Python compiler optimization level = 2. [#4231]
* astropy.vo
+ Fixed check_conesearch_sites with parallel=True on Python >= 3.3
and on Windows (it was broken in both those cases for separate
reasons). [#2970]
* All tests now pass against Numpy v1.10.x. This implies nominal
support for Numpy 1.10.x moving forward (but there may still be
unknown issues). For example, there is already a known performance
issue with tables containing large multi-dimensional columns--for
example, tables that contain entire images in one or more of their
columns. This is a known upstream issue in Numpy. [#4259]
- Update to 1.0.5
+ Bug Fixes
* ``astropy.constants``
> Rename units -> unit and error -> uncertainty in the ``repr`` and ``str``
of constants to match attribute names. [#4147]
* ``astropy.coordinates``
> Fix string representation of ``SkyCoord`` objects transformed into
the ``AltAz`` frame [#4055]
> Fix the ``search_around_sky`` function to allow ``storekdtree`` to be
``False`` as was intended. [#4082]
* ``astropy.io.fits``
> Fix bug when extending one header (without comments) with another
(with comments). [#3967]
> Somewhat improved resource usage for FITS data--previously a new ``mmap``
was opened for each HDU of a FITS file accessed through an ``HDUList``.
Each ``mmap`` used up a single file descriptor, causing problems with
system resource limits for some users. Now only a single ``mmap`` is
opened, and shared for the data of all HDUs. Note: The problem still
persists with using the "convenience" functions. For example using
``fits.getdata`` will create one ``mmap`` per HDU read this way (as
opposed to opening the file with ``fits.open`` and accessing the HDUs
through the ``HDUList`` object). [#4097]
> Fix bug where reading a file without a newline failed with an
unrelated / unhelpful exception. [#4160]
* ``astropy.modeling``
> Cleaned up ``repr`` of models that have no parameters. [#4076]
* ``astropy.nddata``
> Initializing ``NDDataArray`` from another instance now sets ``flags`` as
expected and no longer fails when ``uncertainty`` is set [#4129].
Initializing an ``NDData`` subclass from a parent instance
(eg. ``NDDataArray`` from ``NDData``) now sets the attributes other than
``data`` as it should [#4137].
* ``astropy.table``
> Fix bug when doing outer join on multi-dimensional columns. [#4060]
> Fix an issue with setting fill value when column dtype is changed. [#4088]
> Fix bug when unpickling a bare Column where the _parent_table
attribute was not set. This impacted the Column representation. [#4099]
> Fix issue with the web browser opening with an empty page, and ensure that
the url is correctly formatted for Windows. [#4132]
> Fix NameError in table stack exception message. [#4213]
* ``astropy.utils``
> ``resolve_name`` no longer causes ``sys.modules`` to be cluttered with
additional copies of modules under a package imported like
``resolve_name('numpy')``. [#4084]
> ``console`` was updated to support IPython 4.x and Jupyter 1.x.
This should supress a ShimWarning that was appearing at
import of astropy with IPython 4.0 or later. [#4078]
> Temporary downloaded files created by ``get_readable_fileobj`` when passed
a URL are now deleted immediately after the file is closed. [#4198]
* ``astropy.visualization``
> The color for axes labels was set to white. Since white labels on white
background are hard to read, the label color has been changed to black.
[#4143]
> ``ImageNormalize`` now automatically determines ``vmin``/``vmax``
(via the ``autoscale_None`` method) when they have not been set
explicitly. [#4117]
* ``astropy.vo``
> Cone Search validation no longer crashes when the provider gives an
incomplete test query. It also ensures search radius for a test query
is not too large to avoid timeout. [#4158, #4159]
+ Other Changes and Additions
- Astropy now supports Python 3.5. [#4027]
- Updated bundled version of astropy-helpers to 1.0.5. [#4215]
- Updated tests to support py.test 2.7, and upgraded the bundled copy of
py.test to v2.7.3. [#4027]
- Update to 1.0.4
+ New Features
* ``astropy.convolution``
> Modified Cython functions to release the GIL. This enables convolution
to be parallelized effectively and gives large speedups when used with
multithreaded task schedulers such as Dask. [#3949]
+ API Changes
* ``astropy.coordinates``
> Some transformations for an input coordinate that's a scalar now correctly
return a scalar. This was always the intended behavior, but it may break
code that has been written to work-around this bug, so it may be viewed as
an unplanned API change [#3920]
* ``astropy.visualization``
> The ``astropy_mpl_style`` no longer sets ``interactive`` to ``True``, but
instead leaves it at the user preference. This makes using the style
compatible with building docs with Sphinx, and other non-interactive
contexts. [#4030]
+ Bug Fixes
* ``astropy.coordinates``
> Fix bug where coordinate representation setting gets reset to default value
when coordinate array is indexed or sliced. [#3824]
> Fixed confusing warning message shown when using dates outside current IERS
data. [#3844]
> ``get_sun`` now yields a scalar when the input time is a scalar (this was a
regression in v1.0.3 from v1.0.2) [#3998]
> Fixed bug where some scalar coordinates were incorrectly being changed to
length-1 array coordinates after transforming through certain frames.
[#3920]
> Fixed bug causing the ``separation`` methods of ``SkyCoord`` and frame
classes to fail due to infinite recursion [#4033]
> Made it so that passing in a list of ``SkyCoord`` objects that are in
UnitSphericalRepresentation to the ``SkyCoord`` constructor appropriately
yields a new object in UnitSphericalRepresentation [#3938]
* ``astropy.cosmology``
> Fixed wCDM to not ignore the Ob0 parameter on initialization. [#3934]
* ``astropy.io.fits``
> Fixed crash when updating data in a random groups HDU opened in update
mode. [#3730]
> Fixed incorrect checksum / datasum being written when re-writing a scaled
HDU (i.e. non-trivial BSCALE and/or BZERO) with
``do_not_scale_image_data=False``. [#3883]
> Fixed stray deprecation warning in ``BinTableHDU.copy()``. [#3789]
> Better handling of the ``BLANK`` keyword when auto-scaling scaled image
data. The ``BLANK`` keyword is now removed from the header after
auto-scaling is applied, and it is restored properly (with floating point
NaNs replaced by the filler value) when updating a file opened with the
``scale_back=True`` argument. Invalid usage of the ``BLANK`` keyword is
also better warned about during validation. [#3865]
> Reading memmaped scaled images won't fail when
``do_not_scale_image_data=True`` (that is, since we're just reading the raw
/ physical data there is no reason mmap can't be used). [#3766]
> Fixed a reference cycle that could sometimes cause FITS table-related
objects (``BinTableHDU``, ``ColDefs``, etc.) to hang around in memory
longer than expected. [#4012]
* ``astropy.modeling``
> Added missing default values for ``Ellipse2D`` parameters. [#3903]
> Improved support for pickling of compound models, including both compound
model instances, and new compound model classes. [#3867]
* ``astropy.table``
> Added missing default values for ``Ellipse2D`` parameters. [#3903]
* ``astropy.time``
> Fixed iteration of scalar ``Time`` objects so that ``iter()`` correctly
raises a ``TypeError`` on them (while still allowing ``Time`` arrays to be
iterated). [#4048]
* ``astropy.units``
> Added frequency-equivalency check when declaring doppler equivalencies
[#3728]
> Define ``floor_divide`` (``//``) for ``Quantity`` to be consistent
``divmod``, such that it only works where the quotient is dimensionless.
This guarantees that ``(q1 // q2) * q2 + (q1 % q2) == q1``. [#3817]
> Fixed the documentation of supported units to correctly report support for
SI prefixes. Previously the table of supported units incorrectly showed
several derived unit as not supporting prefixes, when in fact they do.
[#3835]
> Fix a crash when calling ``astropy.units.cds.enable()``. This will now
"set" rather than "add" units to the active set to avoid the namespace
clash with the default units. [#3873]
> Ensure in-place operations on ``float32`` quantities work. [#4007]
* ``astropy.utils``
> The ``deprecated`` decorator did not correctly wrap classes that have a
custom metaclass--the metaclass could be dropped from the deprecated
version of the class. [#3997]
> The ``wraps`` decorator would copy the wrapped function's name to the
wrapper function even when ``'__name__'`` is excluded from the ``assigned``
argument. [#4016]
* Misc
> ``fitscheck`` no longer causes scaled image data to be rescaled when
adding checksums to existing files. [#3884]
> Fixed an issue where running ``import astropy`` from within the source
tree did not automatically build the extension modules if the source is
from a source distribution (as opposed to a git repository). [#3932]
> Fixed multiple instances of a bug that prevented Astropy from being used
when compiled with the ``python -OO`` flag, due to it causing all
docstrings to be stripped out. [#3923]
> Removed source code template files that were being installed
accidentally alongside installed Python modules. [#4014]
> Fixed a bug in the exception logging that caused a crash in the exception
handler itself on Python 3 when exceptions do not include a message.
[#4056]
- update to version 1.0.3:
* New Features
+ astropy.table
o Greatly improved the speed of printing a large table to the
screen when only a few rows are being displayed. [#3796]
+ astropy.time
o Add support for the 2015-Jun-30 leap second. [#3794]
* API Changes
+ astropy.io.ascii
o Note that HTML formatted tables will not always be found with
guess mode unless it passes certain heuristics that strongly
suggest the presence of HTML in the input. Code that expects
to read tables from HTML should specify format='html'
explicitly. See bug fixes below for more details. [#3693]
* Bug Fixes
+ astropy.convolution
o Fix issue with repeated normalizations of Kernels. [#3747]
+ astropy.coordinates
o Fixed get_sun to yield frames with the obstime set to what's
passed into the function (previously it incorrectly always had
J2000). [#3750]
o Fixed get_sun to account for aberration of light. [#3750]
o Fixed error in the GCRS->ICRS transformation that gave
incorrect distances. [#3750]
+ astropy.io.ascii
o Remove HTML from the list of automatically-guessed formats
when reading if the file does not appear to be HTML. This was
necessary to avoid a commonly-encountered segmentation fault
occurring in the libxml parser on MacOSX. [#3693]
+ astropy.io.fits
o Fixes to support the upcoming Numpy 1.10. [#3419]
+ astropy.modeling
o Polynomials are now scaled when used in a compound
model. [#3702]
o Fixed the Ellipse2D model to be consistent with Disk2D in how
pixels are included. [#3736]
o Fixed crash when evaluating a model that accepts no
inputs. [#3772]
+ astropy.testing
o The Astropy py.test plugins that disable unintential internet
access in tests were also blocking use of local UNIX sockets
in tests, which prevented testing some multiprocessing
code--fixed. [#3713]
+ astropy.units
o Supported full SI prefixes for the barn unit ("picobarn",
"femtobarn", etc.) [#3753]
o Fix loss of precision when multiplying non-whole-numbered
powers of units together. For example, before this change,
(u.m ** 1.5) ** Fraction(4, 5) resulted in an inaccurate
floating-point power of 1.2000000000000002. After this change,
the exact rational number of Fraction(6, 5) is
maintained. [#3790]
o Fixed printing of object ndarrays containing multiple Quantity
objects with differing / incompatible units. Note: Unit
conversion errors now cause a UnitConversionError exception to
be raised. However, this is a subclass of the UnitsError
exception used previously, so existing code that catches
UnitsError should still work. [#3778]
* Other Changes and Additions
- Added a new astropy.__bibtex__ attribute which gives a citation
for Astropy in bibtex format. [#3697]
- The bundled version of ERFA was updated to v1.2.0 to address
leapscond updates. [#3802]
* Mon Jul 27 2015 toddrme2178@gmail.com
- Fix hdf5 version requirement
* Thu May 21 2015 toddrme2178@gmail.com
- update to version 1.0.2:
* New Features
+ "astropy.modeling"
o Added support for polynomials with degree 0 or degree greater
than 15. [#3574, 3589]
* Bug Fixes
+ "astropy.config"
o The pre-astropy-0.4 configuration API has been fixed. It was
inadvertently broken in 1.0.1. [#3627]
+ "astropy.io.fits"
o Fixed handling of BINTABLE with TDIMn of size 1. [#3580]
o Fixed a severe memory leak that occurred when reading tile
compressed images. [#3680]
o Fixed bug where column data could be unintentionally
byte-swapped when copying data from an existing FITS file to a
new FITS table with a TDIMn keyword for that column. [#3561]
o The "ColDefs.change_attrib", "ColDefs.change_name", and
"ColDefs.change_unit" methods now work as advertised. It is
also possible (and preferable) to update attributes directly
on "Column" objects (for example setting "column.name"), and
the change will be accurately reflected in any associated
table data and its FITS header. [#3283, #1539, #2618]
o Fixes an issue with the "FITS_rec" interface to FITS table
data, where a "FITS_rec" created by copying an existing FITS
table but adding new rows could not be sliced or masked
correctly. [#3641]
+ "astropy.io.votable"
o Loading a "TABLE" element without any "DATA" now correctly
creates a 0-row array. [#3636]
+ "astropy.modeling"
o Added workaround to support inverses on compound models when
one of the sub-models is itself a compound model with a
manually-assigned custom inverse. [#3542]
o Fixed instantiation of polynomial models with constraints for
parameters (constraints could still be assigned after
instantiation, but not during). [#3606]
o Fixed fitting of 2D polynomial models with the
"LeVMarLSQFitter". [#3606]
+ "astropy.table"
o Ensure "QTable" can be pickled [#3590]
o Some corner cases when instantiating an "astropy.table.Table"
with a Numpy array are handled [#3637]. Notably:
o a zero-length array is the same as passing "None"
o a scalar raises a "ValueError"
o a one-dimensional array is treated as a single row of a table.
+ "astropy.time"
o Ensure a "Column" without units is treated as an "array", not
as an
o Ensure a "Column" without units is treated as an "array", not
as an dimensionless "Quantity". [#3648]
+ "astropy.units"
o Ensure equivalencies that do more than just scale a "Quantity"
are properly handled also in "ufunc" evaluations. [#2496,
[#3586]]
o The LaTeX representation of the Angstrom unit has changed from
"\overset{\circ}{A}" to "\mathring{A}", which should have
better support across regular LaTeX, MathJax and matplotlib
(as of version 1.5) [#3617]
+ "astropy.vo"
o Using HTTPS/SSL for communication between SAMP hubs now works
correctly on all supported versions of Python [#3613]
+ "astropy.wcs"
o When no "relax" argument is passed to "WCS.to_header()" and
the result omits non-standard WCS keywords, a warning is
emitted. [#3652]
* Other Changes and Additions
+ Nothing changed yet.
+ "astropy.units"
o Clarified imperial mass measurements and added pound force
(lbf), kilopound (kip), and pound per square inch
(psi). [#3409]
+ "astropy.vo"
o The number of retries for connections in "astropy.vo.samp" can
now be configured by a "n_retries" configuration
option. [#3612]
+ Testing
o Running "astropy.test()" from within the IPython prompt has
been provisionally re-enabled. [#3184]
- update to version 1.0.1:
* Bug Fixes
- astropy.constants
+ Ensure constants can be turned into Quantity safely. [#3537, #3538]
- astropy.io.ascii
+ Fix a segfault in the fast C parser when one of the column headers is empty [#3545].
+ Fixed support for reading inf and nan values with the fast
reader in Windows. Also fixed in the case of using
use_fast_converter=True with the fast reader. [#3525]
+ Fixed use of mmap in the fast reader on Windows. [#3525]
+ Fixed issue where commented header would treat comments
defining the table (i.e. column headers) as purely information
comments, leading to problems when trying to round-trip the
table. [#3562]
- astropy.modeling
+ Fixed propagation of parameter constraints ('fixed', 'bounds',
'tied') between compound models and their components. There is
may still be some difficulty defining 'tied' constraints
properly for use with compound models, however. [#3481]
- astropy.nddata
+ Restore several properties to the compatibility class
NDDataArray that were inadvertently omitted [#3466].
- astropy.time
+ Time objects now always evalutate to True, except when
empty. [#3530]
* Other Changes and Additions
- Updated bundled astropy-helpers version to v1.0.1 to address
installation issues with some packages that depend on
Astropy. [#3541]
* Miscellaneous
- astropy._erfa
+ The ERFA wrappers are now written directly in the Python/C API
rather than using Cython, for greater performance. [#3521]
- Improve import time of astropy [#3488].
- specfile: added fits2bitmap binary
- update to version 1.0:
* General
- Astropy now requires a Numpy 1.6.0 or later.
* New Features
- astropy.analytic_functions
+ The astropy.analytic_functions was added to contain analytic
functions useful for astronomy [#3077].
- astropy.coordinates
+ astropy.coordinates now has a full stack of frames allowing
transformations from ICRS or other celestial systems down to
Alt/Az coordinates. [#3217]
+ astropy.coordinates now has a get_sun function that gives the
coordinates of the Sun at a specified time. [#3217]
+ SkyCoord now has to_pixel and from_pixel methods that convert
between celestial coordinates as SkyCoord objects and pixel
coordinates given an astropy.wcs.WCS object. [#3002]
+ SkyCoord now has search_around_sky and search_around_3d
convenience methods that allow searching for all coordinates
within a certain distance of another SkyCoord. [#2953]
+ SkyCoord can now accept a frame instance for the frame= keyword
argument. [#3063]
+ SkyCoord now has a guess_from_table method that can be used to
quickly create SkyCoord objects from an astropy.table.Table
object. [#2951]
+ astropy.coordinates now has a Galactocentric frame, a coordinate
frame centered on a (user specified) center of the Milky
Way. [#2761, #3286]
+ SkyCoord now accepts more formats of the coordinate string when
the representation has ra and dec attributes. [#2920]
+ SkyCoord can now accept lists of SkyCoord objects, frame
objects, or representation objects and will combine them into a
single object. [#3285]
+ Frames and SkyCoord instances now have a method
is_equivalent_frame that can be used to check that two frames
are equivalent (ignoring the data). [#3330]
+ The __repr__ of coordinate objects now shows scalar coordinates
in the same format as vector coordinates. [#3350, 3448]
- astropy.cosmology
+ Added lookback_distance, which is c * lookback_time. [#3145]
+ Add baryonic matter density and dark matter only density
parameters to cosmology objects [#2757].
+ Add a clone method to cosmology objects to allow copies of
cosmological objects to be created with the specified variables
modified [#2592].
+ Increase default numerical precision of z_at_value following the
accurate by default, fast by explicit request model [#3074].
+ Cosmology functions that take a single (redshift) input now
broadcast like numpy ufuncs. So, passing an arbitrarily shaped
array of inputs will produce an output of the same
shape. [#3178, #3194]
- astropy.io.ascii
+ Simplify the way new Reader classes are defined, allowing custom
behavior entirely by overriding inherited class attributes
instead of setting instance attributes in the Reader __init__
method. [#2812]
+ There is now a faster C/Cython engine available for reading and
writing simple ASCII formats like CSV. Both are enabled by
default, and fast reading will fall back on an ordinary reader
in case of a parsing failure. Their behavior can be altered with
the parameter fast_reader in read and fast_writer in
write. [#2716]
+ Make Latex/AASTex tables use unit attribute of Column for
output. [#3064]
+ Store comment lines encountered during reading in metadata of
the output table via meta['comment_lines']. [#3222]
+ Write comment lines in Table metadata during output for all
basic formats, IPAC, and fast writers. This functionality can be
disabled with comment=False. [#3255]
+ Add reader / writer for the Enhanced CSV format which stores
table and column meta data, in particular data type and
unit. [#2319]
+ Automatically use guess=False when reading if the file format is
provided and the format parameters are uniquely specified. This
update also removes duplicate format guesses to improve
performance. [#3418]
- astropy.io.fits
+ The fitsdiff script ignores some things by default when
comparing fits files (e.g. empty header lines). This adds a
- -exact option where nothing is ignored. [#2782, #3110]
+ The fitsheader script now takes a --keyword option to extract a
specific keyword from the header of a FITS file, and a --table
option to export headers into any of the data formats supported
by astropy.table. [#2555, #2588]
+ Section now supports all advanced indexing features ndarray does
(slices with any steps, integer arrays, boolean arrays, None,
Ellipsis). It also properly returns scalars when this is
appropriate. [#3148]
- astropy.io.votable
+ astropy.io.votable.parse now takes a datatype_mapping keyword
argument to map invalid datatype names to valid ones in order to
support non-compliant files. [#2675]
- astropy.modeling
+ Added the capability of creating new "compound" models by
combining existing models using arithmetic operators. See the
"What's New in 1.0" page in the Astropy documentation for more
details. [#3231]
+ A new custom_model decorator/factory function has been added for
converting normal functions to Model classes that can work
within the Astropy modeling framework. This replaces the old
custom_model_1d function which is now deprecated. The new
function works the same as the old one but is less limited in
the types of models it can be used to created. [#1763]
+ The Model and Fitter classes have .registry attributes which
provide sets of all loaded Model and Fitter classes (this is
useful for building UIs for models and fitting). [#2725]
+ A dict-like meta member was added to Model. it is to be used to
store any optional information which is relevant to a project
and is not in the standard Model class. [#2189]
+ Added Ellipse2D model. [#3124]
- astropy.nddata
+ New array-related utility functions in astropy.nddata.utils for
adding and removing arrays from other arrays with different
sizes/shapes. [#3201]
+ New metaclass NDDataBase for enforcing the nddata interface in
subclasses without restricting implementation of the data
storage. [#2905]
+ New mixin classes NDSlicingMixin for slicing, NDArithmeticMixin
for arithmetic operations, and NDIOMixin for input/ouput in
NDData. [#2905]
+ Added a decorator support_nddata that can be used to write
functions that can either take separate arguments or NDData
objects. [#2855]
- astropy.stats
+ Added mad_std() function. [#3208]
+ Added gaussian_fwhm_to_sigma and gaussian_sigma_to_fwhm
constants. [#3208]
+ New function sigma_clipped_stats which can be used to quickly
get common statistics for an array, using sigma clipping at the
same time. [#3201]
- astropy.table
+ Changed the internal implementation of the Table class changed
so that it no longer uses numpy structured arrays as the core
table data container. [#2790, #3179]
+ Tables can now be written to an html file that includes
interactive browsing capabilities. To write out to this format,
use Table.write('filename.html', format='jsviewer'). [#2875]
+ A quantity property and to method were added to Table columns
that allow the column values to be easily converted to
astropy.units.Quantity objects. [#2950]
+ Add unique convenience method to table. [#3185]
- astropy.tests
+ Added a new Quantity-aware assert_quantity_allclose. [#3273]
- astropy.time
+ Time can now handle arbitrary array dimensions, with operations
following standard numpy broadcasting rules. [#3138]
- astropy.units
+ Support for VOUnit has been updated to be compliant with version
1.0 of the standard. [#2901]
+ Added an insert method to insert values into a Quantity object.
This is similar to the numpy.insert function. [#3049]
+ When viewed in IPython, Quantity objects with array values now
render using LaTeX and scientific notation. [#2271]
+ Added units.quantity_input decorator to validate quantity inputs
to a function for unit compatibility. [#3072]
+ Added units.astronomical_unit as a long form for
units.au. [#3303]
- astropy.utils
+ Added a new decorator astropy.utils.wraps which acts as a
replacement for the standard library's functools.wraps, the only
difference being that the decorated function also preserves the
wrapped function's call signature. [#2849]
+ astropy.utils.compat.numpy has been revised such that it can
include patched versions of routines from newer numpy versions.
The first addition is a version of broadcast_arrays that can be
used with Quantity and other ndarray subclasses (using the
subok=True flag). [#2327]
+ Added astropy.utils.resolve_name which returns a member of a
module or class given the fully qualified dotted name of that
object as a string. [#3389]
+ Added astropy.utils.minversion which can be used to check
minimum version requirements of Python modules (to test for
specific features and/ or bugs and the like). [#3389]
- astropy.visualization
+ Created astropy.visualization module and added functionality
relating to image normalization (i.e. stretching and scaling) as
well as a new script fits2bitmap that can produce a bitmap image
from a FITS file. [#3201]
+ Added dictionary
astropy.visualization.mpl_style.astropy_mpl_style which can be
used to set a uniform plotstyle specifically for tutorials that
is improved compared to matplotlib defaults. [#2719, #2787,
[#3200]]
- astropy.wcs
+ wcslib has been upgraded to version 4.25. This brings a single
new feature:
+ equinox and radesys will now be given default values conforming
with the WCS specification if EQUINOXa and RADESYa,
respectively, are not present in the header.
+ The minimum required version of wcslib is now 4.24. [#2503]
+ Added a new function wcs_to_celestial_frame that can be used to
find the astropy.coordinates celestial frame corresponding to a
particular WCS. [#2730]
+ astropy.wcs.WCS.compare now supports a tolerance keyword
argument to allow for approximate comparison of floating-point
values. [#2503]
+ added pixel_scale_matrix, celestial, is_celestial, and
has_celestial convenience attributes. Added
proj_plane_pixel_scales, proj_plane_pixel_area, and
non_celestial_pixel_scales utility functions for retrieving WCS
pixel scale and area information [#2832, #3304]
+ Added two functions pixel_to_skycoord and skycoord_to_pixel that
make it easy to convert between SkyCoord objects and pixel
coordinates. [#2885]
+ all_world2pix now uses a much more sophisticated and complete
algorithm to iteratively compute the inverse WCS
transform. [#2816]
+ Add ability to use WCS object to define projections in
Matplotlib, using the WCSAxes package. [#3183]
+ Added is_proj_plane_distorted for testing if pixels are
distorted. [#3329]
- Misc
+ astropy._erfa was added as a new subpackage wrapping the
functionality of the ERFA library in python. This is primarily
of use for other astropy subpackages, but the API may be made
more public in the future. [#2992]
* API Changes
- astropy.coordinates
+ Subclasses of BaseCoordinateFrame which define a custom repr
should be aware of the format expected in SkyCoord.__repr__(),
which changed in this release. [#2704, #2882]
+ The CartesianPoints class (deprecated in v0.4) has now been
removed. [#2990]
+ The previous astropy.coordinates.builtin_frames module is now a
subpackage. Everything that was in the
astropy.coordinates.builtin_frames module is still accessible
from the new package, but the classes are now in separate
modules. This should have no direct impact at the user
level. [#3120]
+ Support for passing a frame as a positional argument in the
SkyCoord class has now been deprecated, except in the case where
a frame with data is passed as the sole positional
argument. [#3152]
+ Improved __repr__ of coordinate objects representing a single
coordinate point for the sake of easier copy/pasting. [#3350]
- astropy.cosmology
+ The functional interface to the cosmological routines as well as
set_current and get_current (deprecated in v0.4) have now been
removed. [#2990]
- astropy.io.ascii
+ Added a new argument to htmldict in the HTML reader named
parser, which allows the user to specify which parser
BeautifulSoup should use as a backend. [#2815]
+ Add FixedWidthTwoLine reader to guessing. This will allows to
read tables that a copied from screen output like print my_table
to be read automatically. Discussed in #3025 and #3099 [#3109]
- astropy.io.fits
+ A new optional argument cache has been added to
astropy.io.fits.open(). When opening a FITS file from a URL,
cache is a boolean value specifying whether or not to save the
file locally in Astropy's download cache (True by
default). [#3041]
- astropy.modeling
+ Model classes should now specify inputs and outputs class
attributes instead of the old n_inputs and n_outputs. These
should be tuples providing human-readable *labels* for all
inputs and outputs of the model. The length of the tuple
indicates the numbers of inputs and outputs. See "What's New in
Astropy 1.0" for more details. [#2835]
+ It is no longer necessary to include __init__ or __call__
definitions in Model subclasses if all they do is wrap the
super-method in order to provide a nice call signature to the
docs. The inputs class attribute is now used to generate a nice
call signature, so these methods should only be overridden by
Model subclasses in order to provide new functionality. [#2835]
+ Most models included in Astropy now have sensible default values
for most or all of their parameters. Call help(ModelClass) on
any model to check what those defaults are. Most of them time
they should be overridden, but some of them are useful (for
example spatial offsets are always set at the origin by
default). Another rule of thumb is that, where possible, default
parameters are set so that the model is a no-op, or close to it,
by default. [#2932]
+ The Model.inverse method has been changed to a *property*, so
that now accessing model.inverse on a model returns a new model
that implements that model's inverse, and *calling*
model.inverse(...)` on some independent variable computes the
value of the inverse (similar to what the old Model.invert()
method was meant to do). [#3024]
+ The Model.invert() method has been removed entirely (it was
never implemented and there should not be any existing code that
relies on it). [#3024]
+ custom_model_1d is deprecated in favor of the new custom_model
(see "New Features" above). [#1763]
+ The Model.param_dim property (deprecated in v0.4) has now been
removed. [#2990]
+ The Beta1D and Beta2D models have been renamed to Moffat1D and
Moffat2D. [#3029]
- astropy.nddata
+ flags, shape, size, dtype and ndim properties removed from
astropy.nddata.NDData. [#2905]
+ Arithmetic operations, uncertainty propagation, slicing and
automatic conversion to a numpy array removed from
astropy.nddata.NDData. The class astropy.nddata.NDDataArray is
functionally equivalent to the old NDData. [#2905]
- astropy.table
+ The Column.units property (deprecated in v0.3) has now been
removed. [#2990]
+ The Row.data and Table._data attributes have been deprecated
related to the change in Table implementation. They are
replaced by Row.as_void() and Table.as_array() methods,
respectively. [#2790]
+ The Table.create_mask method has been removed. This
undocumented method was a development orphan and would cause
corruption of the table if called. [#2790]
+ The return type for integer item access to a Column
(e.g. col[12] or t['a'][12]) is now always a numpy scalar, numpy
ndarray, or numpy MaskedArray. Previously if the column was
multidimensional then a Column object would be returned. [#3095]
+ The representation of Table and Column objects has been changed
to be formatted similar to the print output. [#3239]
- astropy.time
+ The Time.val and Time.vals properties (deprecated in v0.3) and
the Time.lon, and Time.lat properties (deprecated in v0.4) have
now been removed. [#2990]
+ Add decimalyear format that represents time as a decimal
year. [#3265]
- astropy.units
+ Support for VOUnit has been updated to be compliant with version
1.0 of the standard. This means that some VOUnit strings that
were rejected before are now acceptable. [#2901] Notably:
- SI prefixes are supported on most units
- Binary prefixes are supported on "bits" and "bytes"
- Custom units can be defined "inline" by placing them between single
quotes.
+ Unit.get_converter has been deprecated. It is not strictly
necessary for end users, and it was confusing due to lack of
support for Quantity objects. [#3456]
- astropy.utils
+ Some members of astropy.utils.misc were moved into new
submodules. Specifically:
- deprecated, deprecated_attribute, and lazyproperty ->
astropy.utils.decorators
- find_current_module, find_mod_objs ->
astropy.utils.introspection
All of these functions can be imported directly from
astropy.utils which should be preferred over referencing
individual submodules of astropy.utils. [#2857]
+ The ProgressBar.iterate class method (deprecated in v0.3) has
now been removed. [#2990]
+ Updated astropy/utils/console.py ProgressBar() module to display
output to IPython notebook with the addition of an interactive
kwarg. [#2658] [#2789]
- astropy.wcs
+ The WCS.calcFootprint method (deprecated in v0.4) has now been
removed. [#2990]
+ An invalid unit in a CUNITn keyword now displays a warning and
returns a UnrecognizedUnit instance rather than raising an
exception [#3190]
* Bug Fixes
- astropy.convolution
+ astropy.convolution.discretize_model now handles arbitrary
callables correctly [#2274].
- astropy.coordinates
+ Angle.to_string now outputs unicode arrays instead of object
arrays. [#2981]
+ SkyCoord.to_string no longer gives an error when used with an
array coordinate with more than one dimension. [#3340]
+ Fixed support for subclasses of UnitSphericalRepresentation and
SphericalRepresentation [#3354, #3366]
+ Fixed latex display of array angles in IPython notebook. [#3480]
- astropy.io.ascii
+ In the CommentedHeader the data_start parameter now defaults to
0, which is the first uncommented line. Discussed in
[#2692]. [#3054]
+ Position lines in FixedWidthTwoLine reader could consist of many
characters. Now, only one character in addition to the
delimiter is allowed. This bug was discovered as part of [#3109]
+ The IPAC table writer now consistently uses the fill_values
keyword to specify the output null values. Previously the
behavior was inconsistent or incorrect. [#3259]
+ The IPAC table reader now correctly interprets abbreviated
column types. [#3279]
+ Tables that look almost, but not quite like DAOPhot tables could
cause guessing to fail. [#3342]
- astropy.io.fits
+ Fixed the problem in fits.open of some filenames with colon (:)
in the name being recognized as URLs instead of file
names. [#3122]
+ Setting memmap=True in fits.open and related functions now
raises a ValueError if opening a file in memory-mapped mode is
impossible. [#2298]
+ CONTINUE cards no longer end the value of the final card in the
series with an ampersand, per the specification of the CONTINUE
card convention. [#3282]
+ Fixed a crash that occurred when reading an ASCII table
containing zero-precision floating point fields. [#3422]
+ When a float field for an ASCII table has zero-precision a
decimal point (with no digits following it) is still written to
the field as long as there is space for it, as recommended by
the FITS standard. This makes it less ambiguous that these
columns should be interpreted as floats. [#3422]
- astropy.logger
+ Fix a bug that occurred when displaying warnings that produced
an error message dictionary changed size during
iteration. [#3353]
- astropy.modeling
+ Fixed a bug in SLSQPLSQFitter where the maxiter argument was not
passed correctly to the optimizer. [#3339]
- astropy.table
+ Fix a problem where table.hstack fails to stack multiple
references to the same table, e.g. table.hstack([t, t]). [#2995]
+ Fixed a problem where table.vstack and table.hstack failed to
stack a single table, e.g. table.vstack([t]). [#3313]
+ Fix a problem when doing nested iterators on a single
table. [#3358]
+ Fix an error when an empty list, tuple, or ndarray is used for
item access within a table. This now returns the table with no
rows. [#3442]
- astropy.time
+ When creating a Time object from a datetime object the time zone
info is now correctly used. [#3160]
+ For Time objects, it is now checked that numerical input is
finite. [#3396]
- astropy.units
+ Added a latex_inline unit format that returns the units in LaTeX
math notation with negative exponents instead of fractions
[#2622].
+ When using a unit that is deprecated in a given unit format,
non-deprecated alternatives will be suggested. [#2806] For
example::
>>> import astropy.units as u
>>> u.Unit('Angstrom', format='fits')
WARNING: UnitsWarning: The unit 'Angstrom' has been deprecated
in the FITS standard. Suggested: nm (with data multiplied by
0.1). [astropy.units.format.utils]
- astropy.utils
+ treat_deprecations_as_exceptions has been fixed to recognize
Astropy deprecation warnings. [#3015]
- astropy.wcs
+ astropy.wcs.WCS.sub now accepts unicode strings as input on
Python 2.x [#3356]
- Misc
+ Some modules and tests that would crash upon import when using a
non-final release of Numpy (e.g. 1.9.0rc1). [#3471]
* Other Changes and Additions
- The bundled copy of astropy-helpers has been updated to
v1.0. [#3515]
- The bundled copy of astropy-helpers has been updated to
v1.0. [#3513]
- Updated astropy.extern.configobj to Version 5. Version 5 uses
six and the same code covers both Python 2 and Python 3. [#3149]
- astropy.coordinates
+ The repr of SkyCoord and coordinate frame classes now separate
frame attributes and coordinate information. [#2704, #2882]
- astropy.io.fits
+ Overwriting an existing file using the clobber=True option no
longer displays a warning message. [#1963]
+ fits.open no longer catches OSError exceptions on missing or
unreadable files-- instead it raises the standard Python
exceptions in such cases. [#2756, #2785]
- astropy.table
+ Sped up setting of Column slices by an order of
magnitude. [#2994, #3020]
- Updated the bundled six module to version 1.7.3 and made 1.7.3
the minimum acceptable version of six. [#2814]
- The version of ERFA included with Astropy is now v1.1.1 [#2971]
- The code base is now fully Python 2 and 3 compatible and no
longer requires 2to3. [#2033]
- `funcsigs <https://pypi.python.org/pypi/funcsigs>`_ is included
in utils.compat, but defaults to the inspect module components
where available (3.3+) [#3151].
- The list of modules displayed in the pytest header can now be
customized. [#3157]
- `jinja2 <http://jinja.pocoo.org/docs/dev/>`_>=2.7 is now
required to build the source code from the git repository, in
order to allow the ERFA wrappers to be generated. [#3166]
- update to version 0.4.4:
* astropy.vo.samp
+ astropy.vo.samp is now usable on Python builds that do not
support the SSLv3 protocol (which depends both on the version of
Python and the version of OpenSSL or LibreSSL that it is built
against.) [#3308]
+ The default SSL protocol used is now determined from the default
used in the Python ssl standard library. This default may be
different depending on the exact version of Python you are
using. [#3308]
* astropy.wcs
+ WCS allows slices of the form slice(None, x, y), which
previously resulted in an unsliced copy being returned (note:
this was previously incorrectly reported as fixed in v0.4.3)
[#2909]
- changes from version 0.4.3:
* astropy.coordinates
+ The Distance class has been fixed to no longer rely on the
deprecated cosmology functions. [#2991]
+ Ensure float32 values can be used in coordinate
representations. [#2983]
+ Fix frame attribute inheritance in SkyCoord.transform_to()
method so that the default attribute value (e.g. equinox) for
the destination frame gets used if no corresponding value was
explicitly specified. [#3106]
+ Angle accepts hours:mins or deg:mins initializers (without
seconds). In these cases float minutes are also accepted.
+ astropy.coordinates.SkyCoord objects are now copyable. [#2888 ]
+ astropy.coordinates.SkyCoord object attributes are now
immutable. It is still technically possible to change the
internal data for an array-valued coordinate object but this
leads to inconsistencies [#2889] and should not be done. [#2888]
* astropy.cosmology
+ The ztol keyword argument to z_at_value now works correctly
[#2993].
* astropy.io.ascii
+ Fix a bug in Python 3 when guessing file format using a file
object as input. Also improve performance in same situation for
Python 2. [#3132]
+ Fix a problem where URL was being downloaded for each
guess. [#2001]
* astropy.io.fits
+ The in operator now works correctly for checking if an extension
is in an HDUList (as given via EXTNAME, (EXTNAME, EXTVER)
tuples, etc.) [#3060]
+ Added workaround for bug in MacOS X <= 10.8 that caused
np.fromfile to fail. [#3078]
+ Added support for the RICE_ONE compression type synonym. [#3115]
* astropy.modeling
+ Fixed a test failure on Debian/PowerPC and Debian/s390x. [#2708]
+ Fixed crash in evaluating models that have more outputs than
inputs--this case may not be handled as desired for all
conceivable models of this format (some may have to implement
custom prepare_inputs and prepare_outputs methods). But as long
as all outputs can be assumed to have a shape determined from
the broadcast of all inputs with all parameters then this can be
used safely. [#3250]
* astropy.table
+ Fix a bug that caused join to fail for multi-dimensional
columns. [#2984]
+ Fix a bug where MaskedColumn attributes which had been changed
since the object was created were not being carried through when
slicing. [#3023]
+ Fix a bug that prevented initializing a table from a structured
array with multi-dimensional columns with copy=True. [#3034]
+ Fixed unnecessarily large unicode columns when instantiating a
table from row data on Python 3. [#3052]
+ Improved the warning message when unable to aggregate
non-numeric columns. [#2700]
* astropy.units
+ Operations on quantities with incompatible types now raises a
much more informative TypeError. [#2934]
+ Quantity.tolist now overrides the ndarray method to give a
NotImplementedError (by renaming the previous list
method). [#3050]
+ Quantity.round now always returns a Quantity (previously it
returned an ndarray for decimals>0). [#3062]
+ Ensured np.squeeze always returns a Quantity (it only worked if
no dimensions were removed). [#3045]
+ Input to Quantity with a unit attribute no longer can get
mangled with copy=False. [#3051]
+ Remove trailing space in __format__ calls for dimensionless
quantities. [#3097]
+ Comparisons between units and non-unit-like objects now works
correctly. [#3108]
+ Units with fractional powers are now correctly multiplied
together by using rational arithmetic. [#3121]
+ Removed a few entries from spectral density equivalencies which
did not make sense. [#3153]
* astropy.utils
+ Fixed an issue with the deprecated decorator on classes that
invoke super() in their __init__ method. [#3004]
+ Fixed a bug which caused the metadata_conflicts parameter to be
ignored in the astropy.utils.metadata.merge function. [#3294]
* astropy.vo
+ Fixed an issue with reconnecting to a SAMP Hub. [#2674 ]
* astropy.wcs
+ Invalid or out of range values passed to wcs_world2pix will now
be correctly identified and returned as nan values. [#2965]
+ Fixed an issue which meant that Python thought WCS objects were
iterable. [#3066]
* Misc
+ Astropy will now work if your Python interpreter does not have
the bz2 module installed. [#3104]
+ Fixed ResourceWarning for astropy/extern/bundled/six.py that
could occur sometimes after using Astropy in Python 3.4. [#3156]
* astropy.coordinates
+ Improved the agreement of the FK5 <-> Galactic conversion with
other codes, and with the FK5 <-> FK4 <-> Galactic
route. [#3107]
- specfile:
* update copyright year
* added libhdf5 requirement
- update to version 0.4.2:
* astropy.coordinates
- Angle accepts hours:mins or deg:mins initializers (without
seconds). In these cases float minutes are also accepted.
- The repr for coordinate frames now displays the frame
attributes (ex: ra, dec) in a consistent order. It should be
noted that as part of this fix, the
BaseCoordinateFrame.get_frame_attr_names() method now returns
an OrderedDict instead of just a dict. [#2845]
* astropy.io.fits
- Fixed a crash when reading scaled float data out of a FITS file
that was loaded from a string (using HDUList.fromfile) rather
than from a file. [#2710]
- Fixed a crash when reading data from an HDU whose header
contained in invalid value for the BLANK keyword (e.g., a string
value instead of an integer as required by the FITS
Standard). Invalid BLANK keywords are now warned about, but are
otherwise ignored. [#2711]
- Fixed a crash when reading the header of a tile-compressed HDU
if that header contained invalid duplicate keywords resulting in
a KeyError [#2750]
- Fixed crash when reading gzip-compressed FITS tables through the
Astropy Table interface. [#2783]
- Fixed corruption when writing new FITS files through to gzipped
files. [#2794]
- Fixed crash when writing HDUs made with non-contiguous data
arrays to file-like objects. [#2794]
- It is now possible to create astropy.io.fits.BinTableHDU objects
with a table with zero rows. [#2916]
* astropy.io.misc
- Fixed a bug that prevented h5py Dataset objects from being
automatically recognized by Table.read. [#2831]
* astropy.modeling
- Make LevMarLSQFitter work with weights keyword. [#2900]
* astropy.table
- Fixed reference cycle in tables that could prevent Table objects
from being freed from memory. [#2879]
- Fixed an issue where Table.pprint() did not print the header to
stdout when stdout is redirected (say, to a file). [#2878]
- Fixed printing of masked values when a format is
specified. [#1026]
- Ensured that numpy ufuncs that return booleans return plain
ndarray instances, just like the comparison operators. [#2963]
* astropy.time
- Ensure bigendian input to Time works on a little-endian machine
(and vice versa). [#2942]
* astropy.units
- Ensure unit is kept when adding 0 to quantities. [#2968]
* astropy.utils
- Fixed color printing on Windows with IPython 2.0. [#2878]
* astropy.vo
- Improved error message on Cone Search time out. [#2687]
* Fixed a couple issues with files being inappropriately included
and/or excluded from the source archive distributions of
Astropy. [#2843, #2854]
* As part of fixing the fact that masked elements of table columns
could not be printed when a format was specified, the column
format string options were expanded to allow simple specifiers
such as '5.2f'. [#2898]
* Ensure numpy 1.9 is supported. [#2917]
* Ensure numpy master is supported, by making np.cbrt work with
quantities. [#2937]
* Thu Sep 11 2014 toddrme2178@gmail.com
- Mark wcs headers as false positives for devel-file-in-non-devel-package
These are used by the python files so they must be available.
- Update to 0.4.1 (2014-08-08)
* Bug Fixes
- ``astropy.config``
- Fixed a bug where an unedited configuration file from astropy
0.3.2 would not be correctly identified as unedited. [#2772] This
resulted in the warning::
WARNING: ConfigurationChangedWarning: The configuration options
in astropy 0.4 may have changed, your configuration file was not
updated in order to preserve local changes. A new configuration
template has been saved to
'~/.astropy/config/astropy.0.4.cfg'. [astropy.config.configuration]
- Fixed the error message that is displayed when an old
configuration item has moved. Before, the destination
section was wrong. [#2772]
- Added configuration settings for ``io.fits``, ``io.votable`` and
``table.jsviewer`` that were missing from the configuration file
template. [#2772]
- The configuration template is no longer rewritten on every import
of astropy, causing race conditions. [#2805]
- ``astropy.convolution``
- Fixed the multiplication of ``Kernel`` with numpy floats. [#2174]
- ``astropy.coordinates``
- ``Distance`` can now take a list of quantities. [#2261]
- For in-place operations for ``Angle`` instances in which the result unit
is not an angle, an exception is raised before the instance is corrupted.
[#2718]
- ``CartesianPoints`` are now deprecated in favor of
``CartesianRepresentation``. [#2727]
- ``astropy.io.misc``
- An existing table within an HDF5 file can be overwritten without affecting
other datasets in the same HDF5 file by simultaneously using
``overwrite=True`` and ``append=True`` arguments to the ``Table.write``
method. [#2624]
- ``astropy.logger``
- Fixed a crash that could occur in rare cases when (such as in bundled
apps) where submodules of the ``email`` package are not importable. [#2671]
- ``astropy.nddata``
- ``astropy.nddata.NDData()`` no longer raises a ``ValueError`` when passed
a numpy masked array which has no masked entries. [#2784]
- ``astropy.table``
- When saving a table to a FITS file containing a unit that is not
supported by the FITS standard, a warning rather than an exception
is raised. [#2797]
- ``astropy.units``
- By default, ``Quantity`` and its subclasses will now convert to float also
numerical types such as ``decimal.Decimal``, which are stored as objects
by numpy. [#1419]
- The units ``count``, ``pixel``, ``voxel`` and ``dbyte`` now output
to FITS, OGIP and VOUnit formats correctly. [#2798]
- ``astropy.utils``
- Restored missing information from deprecation warning messages
from the ``deprecated`` decorator. [#2811]
- Fixed support for ``staticmethod`` deprecation in the ``deprecated``
decorator. [#2811]
- ``astropy.wcs``
- Fixed a memory leak when ``astropy.wcs.WCS`` objects are copied
[#2754]
- Fixed a crash when passing ``ra_dec_order=True`` to any of the
``*2world`` methods. [#2791]
* Other Changes and Additions
- Bundled copy of astropy-helpers upgraded to v0.4.1. [#2825]
- General improvements to documentation and docstrings [#2722, #2728, #2742]
- Made it easier for third-party packagers to have Astropy use their own
version of the ``six`` module (so long as it meets the minimum version
requirement) and remove the copy bundled with Astropy. See the
astropy/extern/README file in the source tree. [#2623]
- Update to 0.4 (2014-07-16)
* New Features
- ``astropy.constants``
- Added ``b_wien`` to represent Wien wavelength displacement law constant.
[#2194]
- ``astropy.convolution``
- Changed the input parameter in ``Gaussian1DKernel`` and
``Gaussian2DKernel`` from ``width`` to ``stddev`` [#2085].
- ``astropy.coordinates``
- The coordinates package has undergone major changes to implement
`APE5 <https://github.com/astropy/astropy-APEs/blob/master/APE5.rst>`_ .
These include backwards-incompatible changes, as the underlying framework
has changed substantially. See the APE5 text and the package documentation
for more details. [#2422]
- A ``position_angle`` method has been added to the new ``SkyCoord``. [#2487]
- Updated ``Angle.dms`` and ``Angle.hms`` to return ``namedtuple`` -s instead
of regular tuples, and added ``Angle.signed_dms`` attribute that gives the
absolute value of the ``d``, ``m``, and ``s`` along with the sign. [#1988]
- By default, ``Distance`` objects are now required to be positive. To
allow negative values, set ``allow_negative=True`` in the ``Distance``
constructor when creating a ``Distance`` instance.
- ``Longitude`` (resp. ``Latitude``) objects cannot be used any more to
initialize or set ``Latitude`` (resp. ``Longitude``) objects. An explicit
conversion to ``Angle`` is now required. [#2461]
- The deprecated functions for pre-0.3 coordinate object names like
``ICRSCoordinates`` have been removed. [#2422]
- The ``rotation_matrix`` and ``angle_axis`` functions in
``astropy.coordinates.angles`` were made more numerically consistent and
are now tested explicitly [#2619]
- ``astropy.cosmology``
- Added ``z_at_value`` function to find the redshift at which a cosmology
function matches a desired value. [#1909]
- Added ``FLRW.differential_comoving_volume`` method to give the differential
comoving volume at redshift z. [#2103]
- The functional interface is now deprecated in favor of the more-explicit
use of methods on cosmology objects. [#2343]
- Updated documentation to reflect the removal of the functional
interface. [#2507]
- ``astropy.io.ascii``
- The ``astropy.io.ascii`` output formats ``latex`` and ``aastex`` accept a
dictionary called ``latex_dict`` to specify options for LaTeX output. It is
now possible to specify the table alignment within the text via the
``tablealign`` keyword. [#1838]
- If ``header_start`` is specified in a call to ``ascii.get_reader`` or any
method that calls ``get_reader`` (e.g. ``ascii.read``) but ``data_start``
is not specified at the same time, then ``data_start`` is calculated so
that the data starts after the header. Before this, the default was
that the header line was read again as the first data line
[#855 and #1844].
- A new ``csv`` format was added as a convenience for handling CSV (comma-
separated values) data. [#1935]
This format also recognises rows with an inconsistent number of elements.
[#1562]
- An option was added to guess the start of data for CDS format files when
they do not strictly conform to the format standard. [#2241]
- Added an HTML reader and writer to the ``astropy.io.ascii`` package.
Parsing requires the installation of BeautifulSoup and is therefore
an optional feature. [#2160]
- Added support for inputting column descriptions and column units
with the ``io.ascii.SExtractor`` reader. [#2372]
- Allow the use of non-local ReadMe files in the CDS reader. [#2329]
- Provide a mechanism to select how masked values are printed. [#2424]
- Added support for reading multi-aperture daophot file. [#2656]
- ``astropy.io.fits``
- Included a new command-line script called ``fitsheader`` to display the
header(s) of a FITS file from the command line. [#2092]
- Added new verification options ``fix+ignore``, ``fix+warn``,
``fix+exception``, ``silentfix+ignore``, ``silentfix+warn``, and
``silentfix+exception`` which give more control over how to report fixable
errors as opposed to unfixable errors.
- ``astropy.modeling``
- Prototype implementation of fitters that treat optimization algorithms
separately from fit statistics, allowing new fitters to be created by
mixing and matching optimizers and statistic functions. [#1914]
- Slight overhaul to how inputs to and outputs from models are handled with
respect to array-valued parameters and variables, as well as sets of
multiple models. See the associated PR and the modeling section of the
v0.4 documentation for more details. [#2634]
- Added a new ``SimplexLSQFitter`` which uses a downhill simplex optimizer
with a least squares statistic. [#1914]
- Changed ``Gaussian2D`` model such that ``theta`` now increases
counterclockwise. [#2199]
- Replaced the ``MatrixRotation2D`` model with a new model called simply
``Rotation2D`` which requires only an angle to specify the rotation.
The new ``Rotation2D`` rotates in a counter-clockwise sense whereas
the old ``MatrixRotation2D`` increased the angle clockwise.
[#2266, #2269]
- Added a new ``AffineTransformation2D`` model which serves as a
replacement for the capability of ``MatrixRotation2D`` to accept an
arbitrary matrix, while also adding a translation capability. [#2269]
- Added ``GaussianAbsorption1D`` model. [#2215]
- New ``Redshift`` model [#2176].
- ``astropy.nddata``
- Allow initialization ``NDData`` or ``StdDevUncertainty`` with a
``Quantity``. [#2380]
- ``astropy.stats``
- Added flat prior to binom_conf_interval and binned_binom_proportion
- Change default in ``sigma_clip`` from ``np.median`` to ``np.ma.median``.
[#2582]
- ``astropy.sphinx``
- Note, the following new features are included in astropy-helpers as well:
- The ``automodapi`` and ``automodsumm`` extensions now include sphinx
configuration options to write out what ``automodapi`` and ``automodsumm``
generate, mainly for debugging purposes. [#1975, #2022]
- Reference documentation now shows functions/class docstrings at the
inteded user-facing API location rather than the actual file where
the implementation is found. [#1826]
- The ``automodsumm`` extension configuration was changed to generate
documentation of class ``__call__`` member functions. [#1817, #2135]
- ``automodapi`` and ``automodsumm`` now have an ``:allowed-package-names:``
option that make it possible to document functions and classes that
are in a different namespace. [#2370]
- ``astropy.table``
- Improved grouped table aggregation by using the numpy ``reduceat()`` method
when possible. This can speed up the operation by a factor of at least 10
to 100 for large unmasked tables and columns with relatively small
group sizes. [#2625]
- Allow row-oriented data input using a new ``rows`` keyword argument.
[#850]
- Allow subclassing of ``Table`` and the component classes ``Row``, ``Column``,
``MaskedColumn``, ``TableColumns``, and ``TableFormatter``. [#2287]
- Fix to allow numpy integer types as valid indices into tables in
Python 3.x [#2477]
- Remove transition code related to the order change in ``Column`` and
``MaskedColumn`` arguments ``name`` and ``data`` from Astropy 0.2
to 0.3. [#2511]
- Change HTML table representation in IPython notebook to show all
table columns instead of restricting to 80 column width. [#2651]
- ``astropy.time``
- Mean and apparent sidereal time can now be calculated using the
``sidereal_time`` method [#1418].
- The time scale now defaults to UTC if no scale is provided. [#2091]
- ``TimeDelta`` objects can have all scales but UTC, as well as, for
consistency with time-like quantities, undefined scale (where the
scale is taken from the object one adds to or subtracts from).
This allows, e.g., to work consistently in TDB. [#1932]
- ``Time`` now supports ISO format strings that end in "Z". [#2211, #2203]
- ``astropy.units``
- Support for the unit format `Office of Guest Investigator Programs (OGIP)
FITS files
<http://heasarc.gsfc.nasa.gov/docs/heasarc/ofwg/docs/general/ogip_93_001/>`__
has been added. [#377]
- The ``spectral`` equivalency can now handle angular wave number. [#1306 and
[#1899]]
- Added ``one`` as a shorthand for ``dimensionless_unscaled``. [#1980]
- Added ``dex`` and ``dB`` units. [#1628]
- Added ``temperature()`` equivalencies to support conversion between
Kelvin, Celsius, and Fahrenheit. [#2209]
- Added ``temperature_energy()`` equivalencies to support conversion
between electron-volt and Kelvin. [#2637]
- The runtime of ``astropy.units.Unit.compose`` is greatly improved
(by a factor of 2 in most cases) [#2544]
- Added ``electron`` unit. [#2599]
- ``astropy.utils``
- ``timer.RunTimePredictor`` now uses ``astropy.modeling`` in its
``do_fit()`` method. [#1896]
- ``astropy.vo``
- A new sub-package, ``astropy.vo.samp``, is now available (this was
previously the SAMPy package, which has been refactored for use in
Astropy). [#1907]
- Enhanced functionalities for ``VOSCatalog`` and ``VOSDatabase``. [#1206]
- ``astropy.wcs``
- astropy now requires wcslib version 4.23 or later. The version of
wcslib included with astropy has been updated to version 4.23.
- Bounds checking is now performed on native spherical
coordinates. Any out-of-bounds values will be returned as
``NaN``, and marked in the ``stat`` array, if using the
low-level ``wcslib`` interface such as
``astropy.wcs.Wcsprm.p2s``. [#2107]
- A new method, ``astropy.wcs.WCS.compare()``, compares two wcsprm
structs for equality with varying degrees of strictness. [#2361]
- New ``astropy.wcs.utils`` module, with a handful of tools for manipulating
WCS objects, including dropping, swapping, and adding axes.
- Misc
- Includes the new astropy-helpers package which separates some of Astropy's
build, installation, and documentation infrastructure out into an
independent package, making it easier for Affiliated Packages to depend on
these features. astropy-helpers replaces/deprecates some of the submodules
in the ``astropy`` package (see API Changes below). See also
`APE 4 <https://github.com/astropy/astropy-APEs/blob/master/APE4.rst>`_
for more details on the motivation behind and implementation of
astropy-helpers. [#1563]
* API Changes
- ``astropy.config``
- The configuration system received a major overhaul, as part of APE3. It is
no longer possible to save configuration items from Python, but instead
users must edit the configuration file directly. The locations of
configuration items have moved, and some have been changed to science state
values. The old locations should continue to work until astropy 0.5, but
deprecation warnings will be displayed. See the `Configuration transition
<http://astropy.readthedocs.org/en/v0.4/config/config_0_4_transition.html>`_
docs for a detailed description of the changes and how to update existing
code. [#2094]
- ``astropy.io.fits``
- The ``astropy.io.fits.new_table`` function is now fully deprecated (though
will not be removed for a long time, considering how widely it is used).
Instead please use the more explicit ``BinTableHDU.from_columns`` to create
a new binary table HDU, and the similar ``TableHDU.from_columns`` to create
a new ASCII table. These otherwise accept the same arguments as
``new_table`` which is now just a wrapper for these.
- The ``.fromstring`` classmethod of each HDU type has been simplified such
that, true to its namesake, it only initializes an HDU from a string
containing its header *and* data.
- Fixed an issue where header wildcard matching (for example
``header['DATE*']``) can be used to match *any* characters that might
appear in a keyword. Previously this only matched keywords containing
characters in the set ``[0-9A-Za-z_]``. Now this can also match a hyphen
``-`` and any other characters, as some conventions like ``HIERARCH`` and
record-valued keyword cards allow a wider range of valid characters than
standard FITS keywords.
- This will be the *last* release to support the following APIs that have
been marked deprecated since Astropy v0.1/PyFITS v3.1:
- The ``CardList`` class, which was part of the old header implementation.
- The ``Card.key`` attribute. Use ``Card.keyword`` instead.
- The ``Card.cardimage`` and ``Card.ascardimage`` attributes. Use simply
``Card.image`` or ``str(card)`` instead.
- The ``create_card`` factory function. Simply use the normal ``Card``
constructor instead.
- The ``create_card_from_string`` factory function. Use ``Card.fromstring``
instead.
- The ``upper_key`` function. Use ``Card.normalize_keyword`` method
instead (this is not unlikely to be used outside of PyFITS itself, but it
was technically public API).
- The usage of ``Header.update`` with ``Header.update(keyword, value,
comment)`` arguments. ``Header.update`` should only be used analogously
to ``dict.update``. Use ``Header.set`` instead.
- The ``Header.ascard`` attribute. Use ``Header.cards`` instead for a list
of all the ``Card`` objects in the header.
- The ``Header.rename_key`` method. Use ``Header.rename_keyword`` instead.
- The ``Header.get_history`` method. Use ``header['HISTORY']`` instead
(normal keyword lookup).
- The ``Header.get_comment`` method. Use ``header['COMMENT']`` instead.
- The ``Header.toTxtFile`` method. Use ``header.totextfile`` instead.
- The ``Header.fromTxtFile`` method. Use ``Header.fromtextfile`` instead.
- The ``tdump`` and ``tcreate`` functions. Use ``tabledump`` and
``tableload`` respectively.
- The ``BinTableHDU.tdump`` and ``tcreate`` methods. Use
``BinTableHDU.dump`` and ``BinTableHDU.load`` respectively.
- The ``txtfile`` argument to the ``Header`` constructor. Use
``Header.fromfile`` instead.
- The ``startColumn`` and ``endColumn`` arguments to the ``FITS_record``
constructor. These are unlikely to be used by any user code.
These deprecated interfaces will be removed from the development version of
Astropy following the v0.4 release (they will still be available in any
v0.4.x bugfix releases, however).
- ``astropy.modeling``
- The method computing the derivative of the model with respect
to parameters was renamed from ``deriv`` to ``fit_deriv``. [#1739]
- ``ParametricModel`` and the associated ``Parametric1DModel`` and
``Parametric2DModel`` classes have been renamed ``FittableModel``,
``Fittable1DModel``, and ``Fittable2DModel`` respectively. The base
``Model`` class has subsumed the functionality of the old
``ParametricModel`` class so that all models support parameter constraints.
The only distinction of ``FittableModel`` is that anything which subclasses
it is assumed "safe" to use with Astropy fitters. [#2276]
- ``NonLinearLSQFitter`` has been renamed ``LevMarLSQFitter`` to emphasise
that it uses the Levenberg-Marquardt optimization algorithm with a
least squares statistic function. [#1914]
- The ``SLSQPFitter`` class has been renamed ``SLSQPLSQFitter`` to emphasize
that it uses the Sequential Least Squares Programming optimization
algorithm with a least squares statistic function. [#1914]
- The ``Fitter.errorfunc`` method has been renamed to the more general
``Fitter.objective_function``. [#1914]
- ``astropy.nddata``
- Issue warning if unit is changed from a non-trivial value by directly
setting ``NDData.unit``. [#2411]
- The ``mask`` and ``flag`` attributes of ``astropy.nddata.NDData`` can now
be set with any array-like object instead of requiring that they be set
with a ``numpy.ndarray``. [#2419]
- ``astropy.sphinx``
- Use of the ``astropy.sphinx`` module is deprecated; all new development of
this module is in ``astropy_helpers.sphinx`` which should be used instead
(therefore documentation builds that made use of any of the utilities in
``astropy.sphinx`` now have ``astropy_helpers`` as a documentation
dependency).
- ``astropy.table``
- The default table printing function now shows a table header row for units
if any columns have the unit attribute set. [#1282]
- Before, an unmasked ``Table`` was automatically converted to a masked
table if generated from a masked Table or a ``MaskedColumn``.
Now, this conversion is only done if explicitly requested or if any
of the input values is actually masked. [#1185]
- The repr() function of ``astropy.table.Table`` now shows the units
if any columns have the unit attribute set. [#2180]
- The semantics of the config options ``table.max_lines`` and
``table.max_width`` has changed slightly. If these values are not
set in the config file, astropy will try to determine the size
automatically from the terminal. [#2683]
- ``astropy.time``
- Correct use of UT in TDB calculation [#1938, #1939].
- ``TimeDelta`` objects can have scales other than TAI [#1932].
- Location information should now be passed on via an ``EarthLocation``
instance or anything that initialises it, e.g., a tuple containing
either geocentric or geodetic coordinates. [#1928]
- ``astropy.units``
- ``Quantity`` now converts input to float by default, as this is physically
most sensible for nearly all units [#1776].
- ``Quantity`` comparisons with ``==`` or ``!=`` now always return ``True``
or ``False``, even if units do not match (for which case a ``UnitsError``
used to be raised). [#2328]
- Applying ``float`` or ``int`` to a ``Quantity`` now works for all
dimensionless quantities; they are automatically converted to unscaled
dimensionless. [#2249]
- The exception ``astropy.units.UnitException``, which was
deprecated in astropy 0.2, has been removed. Use
``astropy.units.UnitError`` instead [#2386]
- Initializing a ``Quantity`` with a valid number/array with a ``unit``
attribute now interprets that attribute as the units of the input value.
This makes it possible to initialize a ``Quantity`` from an Astropy
``Table`` column and have it correctly pick up the units from the column.
[#2486]
- ``astropy.wcs``
- ``calcFootprint`` was deprecated. It is replaced by
``calc_footprint``. An optional boolean keyword ``center`` was
added to ``calc_footprint``. It controls whether the centers or
the corners of the pixels are used in the computation. [#2384]
- ``astropy.wcs.WCS.sip_pix2foc`` and
``astropy.wcs.WCS.sip_foc2pix`` formerly did not conform to the
``SIP`` standard: ``CRPIX`` was added to the ``foc`` result so
that it could be used as input to "core FITS WCS". As of astropy
0.4, ``CRPIX`` is no longer added to the result, so the ``foc``
space is correct as defined in the `SIP convention
<http://adsabs.harvard.edu/abs/2005ASPC..347..491S>`__. [#2360]
- ``astropy.wcs.UnitConverter``, which was deprecated in astropy
0.2, has been removed. Use the ``astropy.units`` module
instead. [#2386]
- The following methods on ``astropy.wcs.WCS``, which were
deprecated in astropy 0.1, have been removed [#2386]:
- ``all_pix2sky`` -> ``all_pix2world``
- ``wcs_pix2sky`` -> ``wcs_pix2world``
- ``wcs_sky2pix`` -> ``wcs_world2pix``
- The ``naxis1`` and ``naxis2`` attributes and the ``get_naxis``
method of ``astropy.wcs.WCS``, which were deprecated in astropy
0.2, have been removed. Use the shape of the underlying FITS data
array instead. [#2386]
- Misc
- The ``astropy.setup_helpers`` and ``astropy.version_helpers`` modules are
deprecated; any non-critical fixes and development to those modules should
be in ``astropy_helpers`` instead. Packages that use these modules in
their ``setup.py`` should depend on ``astropy_helpers`` following the same
pattern as in the Astropy package template.
* Bug Fixes
- ``astropy.constants``
- ``astropy.constants.Contant`` objects can now be deep
copied. [#2601]
- ``astropy.cosmology``
- The distance modulus function in ``astropy.cosmology`` can now handle
negative distances, which can occur in certain closed cosmologies. [#2008]
- Removed accidental imports of some extraneous variables in
``astropy.cosmology`` [#2025]
- ``astropy.io.ascii``
- ``astropy.io.ascii.read`` would fail to read lists of strings where some of
the strings consisted of just a newline ("\n"). [#2648]
- ``astropy.io.fits``
- Use NaN for missing values in FITS when using Table.write for float
columns. Earlier the default fill value was close to 1e20.[#2186]
- Fixes for checksums on 32-bit platforms. Results may be different
if writing or checking checksums in "nonstandard" mode. [#2484]
- Additional minor bug fixes ported from PyFITS. [#2575]
- ``astropy.io.votable``
- It is now possible to save an ``astropy.table.Table`` object as a
VOTable with any of the supported data formats, ``tabledata``,
``binary`` and ``binary2``, by using the ``tabledata_format``
kwarg. [#2138]
- Fixed a crash writing out variable length arrays. [#2577]
- ``astropy.nddata``
- Indexing ``NDData`` in a way that results in a single element returns that
element. [#2170]
- Change construction of result of arithmetic and unit conversion to allow
subclasses to require the presence of attribute like unit. [#2300]
- Scale uncertainties to correct units in arithmetic operations and unit
conversion. [#2393]
- Ensure uncertainty and mask members are copied in arithmetic and
convert_unit_to. [#2394]
- Mask result of arithmetic if either of the operands is masked. [#2403]
- Copy all attributes of input object if ``astropy.nddata.NDData`` is
initialized with an ``NDData`` object. [#2406]
- Copy ``flags`` to new object in ``convert_unit_to``. [#2409]
- Result of ``NDData`` arithmetic makes a copy of any WCS instead of using
a reference. [#2410]
- Fix unit handling for multiplication/division and use
``astropy.units.Quantity`` for units arithmetic. [#2413]
- A masked ``NDData`` is now converted to a masked array when used in an
operation or ufunc with a numpy array. [#2414]
- An unmasked ``NDData`` now uses an internal representation of its mask
state that ``numpy.ma`` expects so that an ``NDData`` behaves as an
unmasked array. [#2417]
- ``astropy.sphinx``
- Fix crash in smart resolver when the resolution doesn't work. [#2591]
- ``astropy.table``
- The ``astropy.table.Column`` object can now use both functions and callable
objects as formats. [#2313]
- Fixed a problem on 64 bit windows that caused errors
"expected 'DTYPE_t' but got 'long long'" [#2490]
- Fix initialisation of ``TableColumns`` with lists or tuples. [#2647]
- Fix removal of single column using ``remove_columns``. [#2699]
- Fix a problem that setting a row element within a masked table did not
update the corresponding table element. [#2734]
- ``astropy.time``
- Correct UT1->UTC->UT1 round-trip being off by 1 second if UT1 is
on a leap second. [#2077]
- ``astropy.units``
- ``Quantity.copy`` now behaves identically to ``ndarray.copy``, and thus
supports the ``order`` argument (for numpy >=1.6). [#2284]
- Composing base units into identical composite units now works. [#2382]
- Creating and composing/decomposing units is now substantially faster [#2544]
- ``Quantity`` objects now are able to be assigned NaN [#2695]
- ``astropy.wcs``
- Astropy now requires wcslib version 4.23 or later. The version of
wcslib included with astropy has been updated to version 4.23.
- Bug fixes in the projection routines: in ``hpxx2s`` [the
cartesian-to-spherical operation of the ``HPX`` projection]
relating to bounds checking, bug introduced at wcslib 4.20; in
``parx2s`` and molx2s`` [the cartesion-to-spherical operation of
the ``PAR`` and ``MOL`` projections respectively] relating to
setting the stat vector; in ``hpxx2s`` relating to implementation
of the vector API; and in ``xphx2s`` relating to setting an
out-of-bounds value of *phi*.
- In the ``PCO`` projection, use alternative projection equations
for greater numerical precision near theta == 0. In the ``COP``
projection, return an exact result for theta at the poles.
Relaxed the tolerance for bounds checking a little in ``SFL``
projection.
- Fix a bug allocating insufficient memory in
``astropy.wcs.WCS.sub`` [#2468]
- A new method, ``Wcsprm.bounds_check`` (corresponding to wcslib's
``wcsbchk``) has been added to control what bounds checking is performed by
wcslib.
- ``WCS.to_header`` will now raise a more meaningful exception when the WCS
information is invalid or inconsistent in some way. [#1854]
- In ``WCS.to_header``, ``RESTFRQ`` and ``RESTWAV`` are no longer
rewritten if zero. [#2468]
- In ``WCS.to_header``, floating point values will now always be written
with an exponent or fractional part, i.e. ``.0`` being appended if necessary
to acheive this. [#2468]
- If the C extension for ``astropy.wcs`` was not built or fails to import for
any reason, ``import astropy.wcs`` will result in an ``ImportError``,
rather than getting obscure errors once the ``astropy.wcs`` is used.
[#2061]
- When the C extension for ``astropy.wcs`` is built using a version of
``wscslib`` already present in the system, the package does not try
to install ``wcslib`` headers under ``astropy/wcs/include``. [#2536]
- Fixes an unresolved external symbol error in the
`astropy.wcs._wcs` C extension on Microsoft Windows when built
with a Microsoft compiler. [#2478]
- Misc
- Running the test suite with ``python setup.py test`` now works if
the path to the source contains spaces. [#2488]
- The version of ERFA included with Astropy is now v1.1.0 [#2497]
- Removed deprecated option from travis configuration and force use of
wheels rather than allowing build from source. [#2576]
- The short option ``-n`` to run tests in parallel was broken
(conflicts with the distutils built-in option of "dry-run").
Changed to ``-j``. [#2566]
* Other Changes and Additions
- ``python setup.py test --coverage`` will now give more accurate
results, because the coverage analysis will include early imports of
astropy. There doesn't seem to be a way to get this to work when
doing ``import astropy; astropy.test()``, so the ``coverage``
keyword to ``astropy.test`` has been removed. Coverage testing now
depends only on `coverage.py
<http://nedbatchelder.com/code/coverage/>`__, not
``pytest-cov``. [#2112]
- The included version of py.test has been upgraded to 2.5.1. [#1970]
- The included version of six.py has been upgraded to 1.5.2. [#2006]
- Where appropriate, tests are now run both with and without the
``unicode_literals`` option to ensure that we support both cases. [#1962]
- Running the Astropy test suite from within the IPython REPL is disabled for
now due to bad interaction between the test runner and IPython's logging
and I/O handler. For now, run the Astropy tests should be run in the basic
Python interpreter. [#2684]
- Added support for numerical comparison of floating point values appearing in
the output of doctests using a ``+FLOAT_CMP`` doctest flag. [#2087]
- A monkey patch is performed to fix a bug in Numpy version 1.7 and
earlier where unicode fill values on masked arrays are not
supported. This may cause unintended side effects if your
application also monkey patches ``numpy.ma`` or relies on the broken
behavior. If unicode support of masked arrays is important to your
application, upgrade to Numpy 1.8 or later for best results. [#2059]
- The developer documentation has been extensively rearranged and
rewritten. [#1712]
- The ``human_time`` function in ``astropy.utils`` now returns strings
without zero padding. [#2420]
- The ``bdist_dmg`` command for ``setup.py`` has now been removed. [#2553]
- Many broken API links have been fixed in the documentation, and the
``nitpick`` Sphinx option is now used to avoid broken links in future.
[#1221, #2019, #2109, #2161, #2162, #2192, #2200, #2296, #2448, #2456,
[#2460], #2467, #2476, #2508, #2509]
- Update to 0.3.2 (2014-05-13)
* Bug Fixes
- ``astropy.coordinates``
- if ``sep`` argument is specified to be a single character in
``sexagisimal_to_string``, it now includes seperators only between
items [#2183]
- Ensure comparisons involving ``Distance`` objects do not raise exceptions;
also ensure operations that lead to units other than length return
``Quantity``. [#2206, #2250]
- Multiplication and division of ``Angle`` objects is now
supported. [#2273]
- Fixed ``Angle.to_string`` functionality so that negative angles have the
correct amount of padding when ``pad=True``. [#2337]
- Mixing strings and quantities in the ``Angle`` constructor now
works. For example: ``Angle(['1d', 1. * u.d])``. [#2398]
- If ``Longitude`` is given a ``Longitude`` as input, use its ``wrap_angle``
by default [#2705]
- ``astropy.cosmology``
- Fixed ``format()`` compatibility with Python 2.6. [#2129]
- Be more careful about converting to floating point internally [#1815, #1818]
- ``astropy.io.ascii``
- The CDS reader in ``astropy.io.ascii`` can now handle multiple
description lines in ReadMe files. [#2225]
- When reading a table with values that generate an overflow error during
type conversion (e.g. overflowing the native C long type), fall through to
using string. Previously this generated an exception [#2234].
- Some CDS files mark missing values with ``"---"``, others with ``"--"``.
Recognize any string with one to four dashes as null value. [#1335]
- ``astropy.io.fits``
- Allow pickling of ``FITS_rec`` objects. [#1597]
- Improved behavior when writing large compressed images on OSX by removing
an unncessary check for platform architecture. [#2345]
- Fixed an issue where Astropy ``Table`` objects containing boolean columns
were not correctly written out to FITS files. [#1953]
- Several other bug fixes ported from PyFITS v3.2.3 [#2368]
- Fixed a crash on Python 2.x when writing a FITS file directly to a
``StringIO.StringIO`` object. [#2463]
- ``astropy.io.registry``
- Allow readers/writers with the same name to be attached to different
classes. [#2312]
- ``astropy.io.votable``
- By default, floating point values are now written out using
``repr`` rather than ``str`` to preserve precision [#2137]
- ``astropy.modeling``
- Fixed the ``SIP`` and ``InverseSIP`` models both so that they work in the
first place, and so that they return results consistent with the SIP
functions in ``astropy.wcs``. [#2177]
- ``astropy.stats``
- Ensure the ``axis`` keyword in ``astropy.stats.funcs`` can now be used for
all axes. [#2173]
- ``astropy.table``
- Ensure nameless columns can be printed, using 'None' for the header. [#2213]
- ``astropy.time``
- Fixed pickling of ``Time`` objects. [#2123]
- ``astropy.units``
- ``Quantity._repr_latex_()`` returns ``NotImplementedError`` for quantity
arrays instead of an uninformative formatting exception. [#2258]
- Ensure ``Quantity.flat`` always returns ``Quantity``. [#2251]
- Angstrom unit renders better in MathJax [#2286]
- ``astropy.utils``
- Progress bars will now be displayed inside the IPython
qtconsole. [#2230]
- ``data.download_file()`` now evaluates ``REMOTE_TIMEOUT()`` at runtime
rather than import time. Previously, setting ``REMOTE_TIMEOUT`` after
import had no effect on the function's behavior. [#2302]
- Progressbar will be limited to 100% so that the bar does not exceed the
terminal width. The numerical display can still exceed 100%, however.
- ``astropy.vo``
- Fixed ``format()`` compatibility with Python 2.6. [#2129]
- Cone Search validation no longer raises ``ConeSearchError`` for positive RA.
[#2240, #2242]
- ``astropy.wcs``
- Fixed a bug where calling ``astropy.wcs.Wcsprm.sub`` with
``WCSSUB_CELESTIAL`` may cause memory corruption due to
underallocation of a temporary buffer. [#2350]
- Fixed a memory allocation bug in ``astropy.wcs.Wcsprm.sub`` and
``astropy.wcs.Wcsprm.copy``. [#2439]
- Misc
- Fixes for compatibility with Python 3.4. [#1945]
- ``import astropy; astropy.test()`` now correctly uses the same test
configuration as ``python setup.py test`` [#1811]
- Update to 0.3.1 (2014-03-04)
* Bug Fixes
- ``astropy.config``
- Fixed a bug where ``ConfigurationItem.set_temp()`` does not reset to
default value when exception is raised within ``with`` block. [#2117]
- ``astropy.convolution``
- Fixed a bug where ``_truncation`` was left undefined for ``CustomKernel``.
[#2016]
- Fixed a bug with ``_normalization`` when ``CustomKernel`` input array
sums to zero. [#2016]
- ``astropy.coordinates``
- Fixed a bug where using ``==`` on two array coordinates wouldn't
work. [#1832]
- Fixed bug which caused ``len()`` not to work for coordinate objects and
added a ``.shape`` property to get appropriately array-like behavior.
[#1761, #2014]
- Fixed a bug where sexagesimal notation would sometimes include
exponential notation in the last field. [#1908, #1913]
- ``CompositeStaticMatrixTransform`` no longer attempts to reference the
undefined variable ``self.matrix`` during instantiation. [#1944]
- Fixed pickling of ``Longitude``, ensuring ``wrap_angle`` is preserved
[#1961]
- Allow ``sep`` argument in ``Angle.to_string`` to be empty (resulting in no
separators) [#1989]
- ``astropy.io.ascii``
- Allow passing unicode delimiters when reading or writing tables. The
delimiter must be convertible to pure ASCII. [#1949]
- Fix a problem when reading a table and renaming the columns to names that
already exist. [#1991]
- ``astropy.io.fits``
- Ported all bug fixes from PyFITS 3.2.1. See the PyFITS changelog at
http://pyfits.readthedocs.org/en/v3.2.1/ [#2056]
- ``astropy.io.misc``
- Fixed issues in the HDF5 Table reader/writer functions that occurred on
Windows. [#2099]
- ``astropy.io.votable``
- The ``write_null_values`` kwarg to ``VOTable.to_xml``, when set to `False`
(the default) would produce non-standard VOTable files. Therefore, this
functionality has been replaced by a better understanding that knows which
fields in a VOTable may be left empty (only ``char``, ``float`` and
``double`` in VOTable 1.1 and 1.2, and all fields in VOTable 1.3). The
kwarg is still accepted but it will be ignored, and a warning is emitted.
[#1809]
- Printing out a ``astropy.io.votable.tree.Table`` object using `repr` or
`str` now uses the pretty formatting in ``astropy.table``, so it's possible
to easily preview the contents of a ``VOTable``. [#1766]
- ``astropy.modeling``
- Fixed bug in computation of model derivatives in ``LinearLSQFitter``.
[#1903]
- Raise a ``NotImplementedError`` when fitting composite models. [#1915]
- Fixed bug in the computation of the ``Gaussian2D`` model. [#2038]
- Fixed bug in the computation of the ``AiryDisk2D`` model. [#2093]
- ``astropy.sphinx``
- Added slightly more useful debug info for AstropyAutosummary. [#2024]
- ``astropy.table``
- The column string representation for n-dimensional cells with only
one element has been fixed. [#1522]
- Fix a problem that caused ``MaskedColumn.__getitem__`` to not preserve
column metadata. [#1471, #1872]
- With Numpy prior to version 1.6.2, tables with Unicode columns now
sort correctly. [#1867]
- ``astropy.table`` can now print out tables with Unicode columns containing
non-ascii characters. [#1864]
- Columns can now be named with Unicode strings, as long as they contain only
ascii characters. This makes using ``astropy.table`` easier on Python 2
when ``from __future__ import unicode_literals`` is used. [#1864]
- Allow pickling of ``Table``, ``Column``, and ``MaskedColumn`` objects. [#792]
- Fix a problem where it was not possible to rename columns after sorting or
adding a row. [#2039]
- ``astropy.time``
- Fix a problem where scale conversion problem in TimeFromEpoch
was not showing a useful error [#2046]
- Fix a problem when converting to one of the formats ``unix``, ``cxcsec``,
``gps`` or ``plot_date`` when the time scale is ``UT1``, ``TDB`` or ``TCB``
[#1732]
- Ensure that ``delta_ut1_utc`` gets calculated when accessed directly,
instead of failing and giving a rather obscure error message [#1925]
- Fix a bug when computing the TDB to TT offset. The transform routine was
using meters instead of kilometers for the Earth vector. [#1929]
- Increase ``__array_priority__`` so that ``TimeDelta`` can convert itself
to a ``Quantity`` also in reverse operations [#1940]
- Correct hop list from TCG to TDB to ensure that conversion is
possible [#2074]
- ``astropy.units``
- ``Quantity`` initialisation rewritten for speed [#1775]
- Fixed minor string formatting issue for dimensionless quantities. [#1772]
- Fix error for inplace operations on non-contiguous quantities [#1834].
- The definition of the unit ``bar`` has been corrected to "1e5
Pascal" from "100 Pascal" [#1910]
- For units that are close to known units, but not quite, for
example due to differences in case, the exception will now include
recommendations. [#1870]
- The generic and FITS unit parsers now accept multiple slashes in
the unit string. There are multiple ways to interpret them, but
the approach taken here is to convert "m/s/kg" to "m s-1 kg-1".
Multiple slashes are accepted, but discouraged, by the FITS
standard, due to the ambiguity of parsing, so a warning is raised
when it is encountered. [#1911]
- The use of "angstrom" (with a lower case "a") is now accepted in FITS unit
strings, since it is in common usage. However, since it is not officially
part of the FITS standard, a warning will be issued when it is encountered.
[#1911]
- Pickling unrecognized units will not raise a ``AttributeError``. [#2047]
- ``astropy.units`` now correctly preserves the precision of
fractional powers. [#2070]
- If a ``Unit`` or ``Quantity`` is raised to a floating point power
that is very close to a rational number with a denominator less
than or equal to 10, it is converted to a ``Fraction`` object to
preserve its precision through complex unit conversion operations.
[#2070]
- ``astropy.utils``
- Fixed crash in ``timer.RunTimePredictor.do_fit``. [#1905]
- Fixed ``astropy.utils.compat.argparse`` for Python 3.1. [#2017]
- ``astropy.wcs``
- ``astropy.wcs.WCS``, ``astropy.wcs.WCS.fix`` and
``astropy.wcs.find_all_wcs`` now have a ``translate_units`` keyword
argument that is passed down to ``astropy.wcs.Wcsprm.fix``. This can be
used to specify any unsafe translations of units from rarely used ones to
more commonly used ones.
Although ``"S"`` is commonly used to represent seconds, its translation to
``"s"`` is potentially unsafe since the standard recognizes ``"S"``
formally as Siemens, however rarely that may be used. The same applies to
``"H"`` for hours (Henry), and ``"D"`` for days (Debye).
When these sorts of changes are performed, a warning is emitted.
[#1854]
- When a unit is "fixed" by ``astropy.wcs.WCS.fix`` or
``astropy.wcs.Wcsprm.unitfix``, it now correctly reports the ``CUNIT``
field that was changed. [#1854]
- ``astropy.wcs.Wcs.printwcs`` will no longer warn that ``cdelt`` is being
ignored when none was present in the FITS file. [#1845]
- ``astropy.wcs.Wcsprm.set`` is called from within the ``astropy.wcs.WCS``
constructor, therefore any invalid information in the keywords will be
raised from the constructor, rather than on a subsequent call to a
transformation method. [#1918]
- Fix a memory corruption bug when using ``astropy.wcs.Wcs.sub`` with
``astropy.wcs.WCSSUB_CELESTIAL``. [#1960]
- Fixed the ``AttributeError`` exception that was raised when using
``astropy.wcs.WCS.footprint_to_file``. [#1912]
- Fixed a ``NameError`` exception that was raised when using
``astropy.wcs.validate`` or the ``wcslint`` script. [#2053]
- Fixed a bug where named WCSes may be erroneously reported as ``' '`` when
using ``astropy.wcs.validate`` or the ``wcslint`` script. [#2053]
- Fixed a bug where error messages about incorrect header keywords
may not be propagated correctly, resulting in a "NULL error object
in wcslib" message. [#2106]
- Misc
- There are a number of improvements to make Astropy work better on big
endian platforms, such as MIPS, PPC, s390x and SPARC. [#1849]
- The test suite will now raise exceptions when a deprecated feature of
Python or Numpy is used. [#1948]
* Other Changes and Additions
- A new function, ``astropy.wcs.get_include``, has been added to get the
location of the ``astropy.wcs`` C header files. [#1755]
- The doctests in the ``.rst`` files in the ``docs`` folder are now
tested along with the other unit tests. This is in addition to the
testing of doctests in docstrings that was already being performed.
See ``docs/development/testguide.rst`` for more information. [#1771]
- Fix a problem where import fails on Python 3 if setup.py exists
in current directory. [#1877]
* Tue Feb 04 2014 toddrme2178@gmail.com
- Initial version (0.3)