3.9 (2024-04-05)

New Features

Stretch bounds tool now enables dynamic adjustment of spline knots. [#2545, #2623]
Stretch histogram shows a spinner when the histogram data is updating. [#2644]
Spectrum and image viewer bounds can now be set through the Plot Options UI. [#2604, #2649]
Opacity for spatial subsets is now adjustable from within Plot Options. [#2663]
Live-preview of aperture selection in plugins. [#2664, #2684]
"Export Plot" plugin is now replaced with the more general "Export" plugin. [#2722, #2782]
"Export" plugin supports exporting plugin tables, plugin plots, data, and
non-composite spatial subsets.[#2755, #2774, #2760, #2772, #2770, #2780, #2784]
Opening a plugin in the tray (from the API or the toolbar buttons) now scrolls to that plugin.
[#2768]

Cubeviz

Calculated moments can now be output in velocity units. [#2584, #2588, #2665, #2697]
Added functionality to Collapse and Spectral Extraction plugins to save results to FITS file. [#2586]
Moment map plugin now supports linear per-spaxel continuum subtraction. [#2587]
Single-pixel subset tool now shows spectrum-at-spaxel on hover. [#2647]
Spectral extraction plugin re-organized into subsections to be more consistent with specviz2d. [#2676]
Add conical aperture support to cubeviz in the spectral extraction plugin. [#2679]
New aperture photometry plugin that can perform aperture photometry on selected cube slice. [#2666]
Live previews in spectral extraction plugin. [#2733]
Slice plugin is refactored to rely on the spectral value instead of the slice index. This removes
both the slider and slice-index input. [#2715]

Imviz

There is now option for image rotation in Orientation (was Links Control) plugin.
This feature requires WCS linking. [#2179, #2673, #2699, #2734, #2759]
Add "Random" colormap for visualizing image segmentation maps. [#2671]
Enabling any matched zoom tool in a viewer disables other matched zoom tools in other viewers
to avoid recursion. [#2764]

Specviz2d

width argument in Line Analysis plugin is renamed to continuum_width and width
will be removed in a future release. [#2587]
New API access to viz.data_labels, viewer.data_labels_visible, and
viewer.data_labels_loaded. [#2626]

Cubeviz

spatial_subset in the spectral extraction plugin is now renamed to aperture and the deprecated name will
be removed in a future release. [#2664]
Slice plugin's wavelength, wavelength_unit, and show_wavelength are deprecated in favor
of value, value_unit, and show_value, respectively. slice is also deprecated
and should be replaced with accessing/setting value directly. [#2706, #2715]
Disabled exporting spectrum-viewer to PNG in Cubeviz; pending investigation/bugfix. [#2777]

Imviz

Links Control plugin is now called Orientation. [#2179]
Linking by WCS will now always generate a hidden reference data layer
without distortion. As a result, when WCS linked, the first loaded data
is no longer the reference data. Additionally, if data is distorted,
its distortion will show when linked by WCS. If there is also data without WCS,
it can no longer be displayed when WCS linked. [#2179]
imviz.link_data() inputs and behaviors are now consistent with the Orientation plugin. [#2179]
Single-pixel tool is no longer available. To mark a single-pixel area, use Markers plugin. [#2710]

Fix redshifted line lists that were displaying at rest wavelengths, by assuming a global redshift. [#2726]
Order of RGB preset colors now matches for less than and greater than 5 layers. [#2731]

Cubeviz

Imviz

Apertures that are selected and later modified to be invalid properly show a warning. [#2684]
Histogram in Plot Options no longer stalls for a very large image. [#2735]

Specviz

Check unit type (e.g., flux density, surface brightness, counts, etc) for generating
display label for the y axis in spectral viewer. Previously it was hard coded
to always display flux density no matter the input unit. [#2703]