v1.19.0

1.19.0 (2024-11-05)

Bug Fixes

• Fixed mwmVisit SDSS-V Spectrum1D and SpectrumList default loader
  being unable to load files containing only BOSS instrument spectra. [#1185]

• Fixed automatic format detection for SDSS-V SpectrumList default loaders. [#1185]

• Fixed SplineInterpolatedResampler when input and output spectral axes are different
  physical types, e.g. wavelength and velocity. [#1190]

Other Changes and Additions

• "Multi" loaders have been removed from SDSS-V SpectrumList default loaders. [#1185]

v1.18.0

New Features

• New Spectrum1D.with_spectral_axis_and_flux_units method to convert both
  spectral axis and flux units at the same time. [#1184]

Bug Fixes

• Fixed Spectrum1D.with_flux_unit() not converting uncertainty along
  with flux unit. [#1181]

• Fixed extracting a spectral region when one of spectrum/region is in wavelength
  and the other is in frequency units. [#1187]

Other Changes and Additions

• Replaced LevMarLSQFitter with TRFLSQFitter as the former is no longer
  recommended by astropy. [#1180]

v1.17.0

v1.17.0

New Features

• Fitting and excision functions can now use inclusive upper bounds for input regions if specified. [#1171]

Bug Fixes

• Fixed specifying a single value for window in analysis.fit_lines. [#1164]

Other Changes and Additions

• Dropped support for python 3.9. [#1176]

• utils.wcs_utils.refraction_index (and thus air_to_vac and vac_to_air)
  now defaults to Morton2000 as the method instead of Griesen2006. [#1169]

v1.16.0

1.16.0 (2024-08-08)

Bug Fixes

• Arithmetic operations on Spectrum1D objects now preserve spectral axis values that
  were updated by setting redshift or radial velocity. [#1158]

• Ensure supported dtype is passed to medfilt during smoothing. [#1156]

• Adjusted copy semantics for numpy 2 compatibility. [#1145]

• Fixed moment 0 calculation to sum flux*dx (rather than flux) to match line_flux. [#1141]

Other Changes and Additions

• Changed the tabular-fits reader/writer to round-trip the header,
  by default in the primary HDU. The reader now reads the primary
  header into meta['header']; the old behaviour of reading the
  header from the data extension can be restored by setting the option
  store_data_header=True. The writer is taking a corresponding option
  for saving meta['header'] to either primary or data extension headers. [#1113]

• Improved documentation for readers/writers. [#1152, #1157]

** Note: re-released on Github 2024-09-23 to re-trigger Zenodo hook

v1.15.0

New Features

• Implemented SpectralRegion.write() and SpectralRegion.read() to round-trip spectral
  regions to/from ECSV files via astropy.table.QTable. [#1133]

v1.14.0

Changes

• new_flux_unit changed to with_flux_unit to match spectral version,
  updated docstring to reflect actual behavior. [#1124]

• Compatibility with numpy 2.0 and astropy 6.1. [#1130]

v1.13.0

New Features

• Added SDSS-V file format readers. [#1107]

• Switched from using numpy.correlate to scipy.signal.correlate in template_correlate
  and enabled passing through the method argument. [#1114]

• Added DESI file format readers. [#1116]

• Added truncate option for resampler and template correlation extrapolation treatment. [#1121]

Bug Fixes

• SDSS reader now properly exposes the spPlate_identify and spPlate_loader functions. [#1097]

• Masks now round-trip through tabular-fits reader/write. [#1104]

• template_correlate no longer errors when used on a Spectrum1D that lacks an
  uncertainty array. [#1118]

• with_spectral_unit has been changed to with_spectral_axis_unit and actually works
  now. [#1119]

• Template correlation functions now truncate to overlapping region to avoid NaNs in normalization
  when spectrum and template have non-overlapping regions. [#1121]

• Fixed numpy error when printing a Spectrum1D object. [#1123]

Other Changes and Additions

• Made a couple small updates to developer docs. [#1110, #1112]

• Updated the format of Spectrum1D.__str__ and Spectrum1D.__repr__. [#1123]

v1.12.0

New Features

• Registering a SpectrumList reader for a data loader is now optional. [#1068]

Bug Fixes

• Fixed SDSS-I/II spSpec units. [#1066]

• Addressed compatibility with ASDF 3.0 for JWST data. [#1079]

Other Changes and Additions

• Corrected velocity_convention options in Spectrum1D docstring. [#1088]

v1.11.0

New Features

• wcs1d-fits loader now reads and writes boolean masks. [#1051]

Bug Fixes

• Reimplementation of FluxConservingResampler. It is now faster and yields more accurate results. [#1060]

• Fixed uncertainty calculations in centroid and gaussian width functions, also added an option
  to use an astropy.uncertainty distribution instead of the analytic solution. [#1057]

Other Changes and Additions

• Drastically improved performance of region extraction. [#1048]

• When creating a Spectrum1D object, it is enforced that the spectral axis is sorted and either
  strictly increasing or decreasing. [#1061]

v1.10.0

New Features

• wcs1d-fits loader now reads and writes celestial components of
  of multi-dimensional WCS, and handles mask and uncertainty
  attributes. [#1009]

• Added support for reading from files with flux in counts. [#1018]

Bug Fixes

• Fixed SpectralAxis.with_observer_stationary_relative_to to actually
  return the updated spectral axis. [#992]

• Fixed region extraction for axes/regions in units of u.pix. [#1001]

• tabular-fits writer now properly converts uncertainties to StdDevUncertainty
  if needed. [#1027]

• Fix bug in fit_lines which gave unexpected outputs from the get_fit_info
  and ignore_units keyword arguments. [#1030]

• Fix SNR calculations with both masks and regions. [#1044]

Other Changes and Additions

• Added some basic documentation for Spectrum1D.write. [#1017]

• JWST s2d and s3d readers now requires the optional dependency, stdatamodels,
  which user has to install separately. [#1038]

• ASDF tag for Spectrum1D is now compatible with ASDF v3.
  As a result, minversion of asdf has been bumped to 2.14.
  Redundant ASDF schema for SpectralCoord is removed.
  It also now supports mask serialization. [#1042, #1053]

• JWST X1D reader will no longer raise a UnitWarning for surface brightness
  error. [#1050]