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## v0.11.0 - 2023-05-19

<!-- Release notes generated using configuration in .github/release.yml at main -->
### What's Changed

#### Bug Fixes

- Fix for HighLevelWCS attribute error by @keflavich in https://github.com/astropy/reproject/pull/349
- Fixes for solar frames and non-degree units by @astrofrog in https://github.com/astropy/reproject/pull/360
- If shape_out is specified, use this over the array_shape attribute of a WCS object by @astrofrog in https://github.com/astropy/reproject/pull/361

#### New Features

- Allow single inputs to find_optimal_celestial_wcs and add ability to specify HDU by @astrofrog in https://github.com/astropy/reproject/pull/344
- Add support for specifying output projection as APE 14 WCS with array_shape defined by @astrofrog in https://github.com/astropy/reproject/pull/345
- Started adding support for allowing dask arrays as input by @astrofrog in https://github.com/astropy/reproject/pull/352

#### Other Changes

- Mark tests that use remote data by @smaret in https://github.com/astropy/reproject/pull/339
- Fix code style by @astrofrog in https://github.com/astropy/reproject/pull/340
- Simplify blocked reprojection implementation by using dask and improve efficiency of parallel reprojection by @astrofrog in https://github.com/astropy/reproject/pull/314
- Remove code that was required for astropy<4 by @astrofrog in https://github.com/astropy/reproject/pull/346
- Add a new 'all' extras for shapely by @astrofrog in https://github.com/astropy/reproject/pull/363

### New Contributors

- @smaret made their first contribution in https://github.com/astropy/reproject/pull/339

**Full Changelog**: https://github.com/astropy/reproject/compare/v0.10.0...v0.11.0

## v0.10.0 - 2023-01-30

<!-- Release notes generated using configuration in .github/release.yml at main -->
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## 0.9 - 2022-09-02

- Drop support for Python 3.7.

-
- Infrastructure and packaging updates.

-
- Made many improvements, bug fixes, and significant speed-ups for the adaptive
resampling algorithm, `reproject_adaptive`. These bug fixes may cause
changes to the reprojected images, which are typically negligible.
Improvements include the addition of a flux-conserving mode, support for a
Gaussian filter kernel, a menu of boundary-handling modes, and a
`center_jacobian` flag to trade speed for accuracy with rapidly-varying
transformations.

- resampling algorithm, `reproject_adaptive`. These bug fixes may cause
- changes to the reprojected images, which are typically negligible.
- Improvements include the addition of a flux-conserving mode, support for a
- Gaussian filter kernel, a menu of boundary-handling modes, and a
- `center_jacobian` flag to trade speed for accuracy with rapidly-varying
- transformations.
-
- Added a `roundtrip_coords` argument to `reproject_adaptive` and
`reproject_interp`. By default, all coordinate transformations are run in
both directions to handle some situations where they are ambiguous. This can
be disabled by setting `roundtrip_coords=False` which may offer a
significant speed increase.
- `reproject_interp`. By default, all coordinate transformations are run in
- both directions to handle some situations where they are ambiguous. This can
- be disabled by setting `roundtrip_coords=False` which may offer a
- significant speed increase.
-

## 0.8 - 2021-08-11

- Improve `find_optimal_celestial_wcs` to accept input data descriptions as
just array shapes, not necessarily fully populated arrays. This makes it
possible to solve for the optimal WCS for a set of images that couldn't fit
into memory all at once, since the actual data aren't needed for optimal WCS
determination. [#242]

- just array shapes, not necessarily fully populated arrays. This makes it
- possible to solve for the optimal WCS for a set of images that couldn't fit
- into memory all at once, since the actual data aren't needed for optimal WCS
- determination. [#242]
-
- Fix implementation of `hdu_weights` in `reproject_and_coadd`. [#249]

-

## 0.7.1 - 2020-05-29

- Fixed compatibility with Astropy 4.1. [#234]

-
- Updated minimum requirement for SciPy. [#236]

-

## 0.7 - 2020-04-02

- Made C extension in overlapArea.c thread-safe by removing global
variables. [#211]

- variables. [#211]
-
- Made it possible to control whether to output debugging information
from overlapArea.c by setting DEBUG_OVERLAP_AREA=1 at build-time. [#211]

- from overlapArea.c by setting DEBUG_OVERLAP_AREA=1 at build-time. [#211]
-
- Fix compatibility with astropy v4.0.1. [#227]

-
- Disable parallelization by default in `reproject_exact` - this can be
enabled with `parallel=True`. [#227]

- enabled with `parallel=True`. [#227]
-
- Fixed a bug with `reproject_exact` with `parallel=False` and
`return_footprint=False`, which caused the footprint to be returned
anyway. [#227]

- `return_footprint=False`, which caused the footprint to be returned
- anyway. [#227]
-
- The infrastructure of the package has been updated in line with the
APE 17 roadmap (https://github.com/astropy/astropy-APEs/blob/main/APE17.rst).
The main changes are that the `python setup.py test` and
`python setup.py build_docs` commands will no longer work. The
easiest way to replicate these commands is to install the tox
(https://tox.readthedocs.io) package and run `tox -e test` and
`tox -e build_docs`. It is also possible to run pytest and sphinx
directly. [#228]

- APE 17 roadmap (https://github.com/astropy/astropy-APEs/blob/main/APE17.rst).
- The main changes are that the `python setup.py test` and
- `python setup.py build_docs` commands will no longer work. The
- easiest way to replicate these commands is to install the tox
- (https://tox.readthedocs.io) package and run `tox -e test` and
- `tox -e build_docs`. It is also possible to run pytest and sphinx
- directly. [#228]
-

## 0.6 - 2019-11-01

- Added support for using any WCS that conforms to the WCS API described
in the Astropy Proposal for Enhancements 14 (APE 14). The
`independent_celestial_slices=` argument to `reproject_interp` has
been deprecated since it is no longer needed, as transformations are
automatically done in the most efficient way possible. [#166]

- in the Astropy Proposal for Enhancements 14 (APE 14). The
- `independent_celestial_slices=` argument to `reproject_interp` has
- been deprecated since it is no longer needed, as transformations are
- automatically done in the most efficient way possible. [#166]
-
- Include a warning for high resolution images with `reproject_exact`,
since if the pixels are <0.05", precision issues can occur. [#200]

- since if the pixels are <0.05", precision issues can occur. [#200]
-
- Added a new `reproject_and_coadd` function for doing mosaicking of
individual images, and added section in documentation about mosaicking.
[#186]

- individual images, and added section in documentation about mosaicking.
- [#186]
-
- Added a new reproject.adaptive sub-package that implements the DeForest
(2004) algorithm for reprojection. [#52]

- (2004) algorithm for reprojection. [#52]
-
- Fixed a bug that caused 'exact' reprojection results to have numerical
issues when doing identity transformations. [#190]

- issues when doing identity transformations. [#190]
-

## 0.5.1 - 2019-09-01

- Fixed a bug that caused 'exact' reprojection to fail if one or more of
the WCSes was oriented such that E and W were flipped. [#188]
- the WCSes was oriented such that E and W were flipped. [#188]

## 0.5 - 2019-06-13

- Improve parse_output_projection to make it so that the output projection
can be specified as a filename. [#150]

- can be specified as a filename. [#150]
-
- Fixed a bug that caused HEALPix maps in RING order to not be correctly
interpreted. [#163]

- interpreted. [#163]
-
- Make it possible to specify the output array for reprojection using the
`output_array=` keyword argument. [#115]

- `output_array=` keyword argument. [#115]
-

## 0.4 - 2018-01-29

- Refactored HEALPix reprojection code to use the astropy-healpix package
instead of healpy. [#139]

- instead of healpy. [#139]
-
- Added the ability to specify an output array in `reproject_interp`, which
permits the use of memory-mapped arrays and therefore provides the capability
to handle data cubes much larger than memory [#115]

- permits the use of memory-mapped arrays and therefore provides the capability
- to handle data cubes much larger than memory [#115]
-
- Fix test 32-bit test failures. [#146]

-
- Fix an issue with reprojecting images where there are two solutions along
the line of sight by forcing round-tripping of coordinate conversions [#129]

- the line of sight by forcing round-tripping of coordinate conversions [#129]
-
- Explicitly define default HDU as 0 for normal reprojection and 1 for
HEALPix reprojection. [#119]

- HEALPix reprojection. [#119]
-
- Added a function to find the optimal WCS for a set of images. [#136, #137]

-

## 0.3.2 - 2017-10-22

- Fix a regression that caused certain all-sky images (e.g. the Mellinger Milky
Way Panorama, http://www.milkywaysky.com) to be reprojected to all NaNs when
the output WCS was in Mollweide coordinates. [#124]
- Way Panorama, http://www.milkywaysky.com) to be reprojected to all NaNs when
- the output WCS was in Mollweide coordinates. [#124]

## 0.3.1 - 2016-07-07

- Include missing license file in tarball.

-
- Updated documentation to remove warnings about early versions.

-

## 0.3 - 2016-07-06

- Allow users to pass a `field=` option to `reproject_from_healpix`
to access different fields in a HEALPIX file. [#86]

- to access different fields in a HEALPIX file. [#86]
-
- Significant improvements to performance when the input data is a large
memory-mapped array. [#105]

- memory-mapped array. [#105]
-
- Significant refactoring of interpolating reprojection to improve support for
n-dimensional arrays, optionally including two celestial axes (in which
case the coordinate transformation is taken into account). [#96, #102]

- n-dimensional arrays, optionally including two celestial axes (in which
- case the coordinate transformation is taken into account). [#96, #102]
-

## 0.2 - 2015-10-29

- Fixed a bug that caused reprojection by interpolation to be truncated for
rectangular output images.
- rectangular output images.

## 0.1 - 2015-05-08

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