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0.11.0 (Unreleased)

New Features

  • Add a schema and tag for the Stokes frame. [#164]

Bug Fixes

0.10.0 (12/20/2018)

New Features

  • Initializing a WCS object with a pipeline list now keeps the complete CoordinateFrame objects in the WCS.pipeline. The effect is that a WCS object can now be initialized with a pipeline from a different WCS object. [#174]
  • Implement support for astropy APE 14 (https://doi.org/10.5281/zenodo.1188875). [#146]
  • Added a wcs_from_[points function which creates a WCS object two matching sets of points (x,y) and (ra, dec). [#42]

0.9.0 (2018-05-23)

New Features

  • Added a TemporalFrame to represent relative or absolute time axes. [#125]
  • Removed deprecated grid_from_domain function and WCS.domain property. [#119]
  • Support for Python 2.x, 3.0, 3.1, 3.2, 3.3 and 3.4 was removed. [#119]
  • Add a coordinate_to_quantity method to CoordinateFrame which handles converting rich coordinate input to numerical values. It is an inverse of the coordinates method. [#133]
  • Add a StokesFrame which converts from 'I', 'Q', 'U', 'V' to 0-3. [#133]
  • Support serializing the base CoordinateFrame class to asdf, by making a specific tag and schema for Frame2D. [#150]
  • Generalized the footrpint calculation to all output axes. [#167]

API Changes

  • The argument output="numerical_plus" was replaced by a bool argument with_units. [#156]
  • Added a new flag axis_type to the footprint method. It controls what type of footprint to calculate. [#167]

Bug Fixes

  • Fixed a bug in bounding_box definition when the WCS has only one axis. [#117]
  • Fixed a bug in grid_from_bounding_box which caused the grid to be larger than the image in cases when the bounding box is on the edges of an image. [#121]

0.8.0 (2017-11-02)

  • LabelMapperRange now returns LabelMapperRange._no_label when the key is not within any range. [#71]
  • LabelMapperDict now returns LabelMapperDict._no_label when the key does not match. [#72]
  • Replace domain with bounding_box. [#74]
  • Added a LabelMapper model where mapper is an instance of ~astropy.modeling.core.Model. [#78]
  • Evaluating a WCS with bounding box was moved to astropy.modeling. [#86]
  • RegionsSelector now handles the case when a label does not have a corresponding transform and returns RegionsSelector.undefined_transform_value. [#86]
  • GWCS now deals with axes types which are neither celestial nor spectral as "unknown" and creates a transform equivalent to the FITS linear transform. [#92]

0.7 (2016-12-23)

New Features

  • Added wcs_from_fiducial function to wcstools. [#34]
  • Added domain to the WCS object. [#36]
  • Added grid_from_domain function. [#36]
  • The WCS object can return now an ~astropy.coordinates.SkyCoord or ~astropy.units.Quantity object. This is triggered by a new parameter to the __call__ method, output which takes values of "numericals" (default) or "numericals_plus". [#64]

API_Changes

  • Added atol argument to LabelMapperDict, representing the absolute tolerance [#29]
  • The CoordinateFrame.transform_to method was removed [#64]

Bug Fixes

  • Fixed a bug in LabelMapperDict where a wrong index was used.[#29]
  • Changed the order of the inputs when LabelMapperArray is evaluated as the inputs are supposed to be image coordinates. [#29]
  • Renamed variables in read_wcs_from_header to match loop variable [#63]

0.5.1 (2016-02-01)

Bug Fixes

  • Added ASDF requirement to setup. [#30]
  • Import OrderedDict from collections, not from astropy. [#32]

0.5 (2015-12-28)

Initial release on PYPI.