4.0 (2024-10-17)

New Features

Added ability to load remote data from a URI or URL. [#2875, #2923]
Added flux/surface brightness translation and surface brightness
unit conversion in Cubeviz and Specviz. [#2781, #2940, #3088, #3111, #3113, #3129,
#3139, #3149, #3155, #3178, #3185, #3187, #3190, #3156, #3200, #3192, #3206, #3211, #3216, #3219]
Plugin tray is now open by default. [#2892]
New "About" plugin to show Jdaviz version info. [#2886]
Descriptions are shown in the color mode dropdown for image layers to help describe the use-cases
for Colormap vs Color. [#2894]
The colormap menu for image layers now shows in-line previews of the colormaps. [#2900]
Plugins can now expose in-UI API hints. [#3137, #3159]
The standalone version of jdaviz now uses solara instead of voila, resulting in faster load times. [#2909]
New configuration for ramp/Level 1 and rate image/Level 2 data products from Roman WFI and
JWST [#3120, #3148, #3167, #3171, #3194]
Unit columns are now visible by default in the results table in model fitting. [#3196]

Automatic spectral extraction now goes through the logic of the spectral extraction plugin for
self-consistency. This results in several breaking changes to data-labels and get_data
(the extracted spectra are now given dedicated data-labels instead of referring to them by
the label of the flux cube) as well as to several plugins: model fitting, gaussian smooth,
line analysis, and moment maps. [#2827]
Background subtraction support within Spectral Extraction. [#2859]
Aperture photometry plugin now listens to changes in display unit. [#3118]

Added a table with catalog search results. [#2915, #3101, #3099]
"Imviz Line Profiles (XY)" plugin is renamed to "Image Profiles (XY)". [#3121]
Added Gaia catalog to Catalog plugin. [#3090]
Updated link_type to align_by and wcs_use_affine to wcs_fast_approximation in
Orientation plugin API to better match UI text. [#3128]

Add option to use self-derived spatial profile for Horne extract in spectral extraction plugin. [#2845]

The Monochromatic option for color_mode in plot options is now renamed to Color.
Monochromatic will continue to work with a deprecation warning, but may be removed in a
future release. [#2894]
Plugin Table components now support row selection. [#2856]

get_data no longer supports function or spatial_subset as arguments. To access
an extracted 1D spectrum, use the Spectral Extraction plugin or the automatic extraction of
spatial subsets, and refer to the data-label assigned to the resulting 1D spectrum. [#2827]
Several plugins that take 1D spectra replace spatial_subset with referring to the 1D
spectrum in dataset. This affects: model fitting, gaussian smooth, line analysis,
and moment maps. [#2827]
Removed deprecated cubeviz.select_slice() method. Use cubeviz.select_wavelength()
instead. [#2878]
In the Slice plugin, the following deprecated properties were removed: wavelength (use value),
wavelength_unit (use value_unit), show_wavelength (use show_value),
slice (use value). [#2878]
Spectral Extraction: renamed collapse_to_spectrum(...) to extract(...). [#2859]
Generic FITS parsing now goes through specutils loaders first, if possible.
If a specutils loader is used, uncertainty is converted to standard deviation type. [#3119]
Custom Spectrum1D writer format jdaviz-cube is removed. Use wcs1d-fits from
specutils instead. [#2094]
Aperture Photometry plugin now uses TRFLSQFitter to fit radial profile because LevMarLSQFitter
is no longer recommended by Astropy. [#3202]

Deprecated Rotate Canvas plugin was removed; use Orientation plugin instead. [#2878]
Aperture Photometry plugin now uses TRFLSQFitter to fit radial profile because LevMarLSQFitter
is no longer recommended by Astropy. [#3202]

In the Line Analysis plugin, deprecated width was removed (use continuum_width). [#2878]

Markers table can now export to CSV but its columns had to be changed to accomodate this fix:
world and pixel (previously containing SkyCoord and pixel location tuples, respectively) are now
each two separate columns for world_ra/world_dec and pixel_x/pixel_y, respectively. [#3089]
Stretch histogram in zoom limits no longer attempts unnecessary updates when zoom limits are changed. [#3151]
Aperture Photometry plugin no longer allows negative counts conversion factor. [#3154]
Fixed multiple select handling for batch mode aperture photometry in Cubeviz. [#3163]

Moment map plugin now reflects selected flux / surface brightness unit for moment zero. [#2877]
Update the scale factor used to convert a spectrum between surface brightness and flux
to use wavelength-dependent aperture area instead of the cone slice scale factor. [#2860]
Handle display units when doing flux / surface brightness conversions. [#2910]
Flux units are now correct for collapsed spectra when using the sum function
when units are in per steradian. [#2873]
Mouse over coordinates now responds to the selected surface brightness unit. [#2931]
Fixed MaNGA cube loading. Uncertainty type is also handled properly now. [#3119]
Fixed spectral axis value display in Markers plugin. Previously, it failed to display
very small values, resulting in zeroes. [#3119]
No longer incorrectly swap RA and Dec axes when loading Spectrum1D objects. [#3133]
Fixed fitting a model to the entire cube when NaNs are present. [#3191]

Fixed Subset unit when it is created in 2D spectrum viewer. [#3201]
Fix matched mouseover marker for 1d spectrum viewer when mouse is over 2d spectrum viewer. [#3203]

Bump required specutils version to 1.18. Moment 0 calculation is now in units
of flux*dx (rather than flux) [#3184]