[BUG] Moment map creates nan image with frequency units and continuum

[javerbukh]

Jdaviz component

Cubeviz

Description

After #2758 is merged, there is a bug where changing the display units to Hz and using a continuum to create a moment map of 1 creates an image of NaNs.

How to Reproduce

1. Run CubevizExample notebook
2. Change units to Hz
3. Create spectral subset
4. Open moment map plugin
5. Spectral region is Subset 1
6. Continuum of surrounding
7. Moment of 1
8. Spectral units
9. Add data to image viewer
10. Calculate moment

You should see a blank image in the image viewer the data was added to.

Expected behavior

A moment map of 1 for the image in frequency units.

Browser

No response

Jupyter

jupyter --version

Software versions

Windows-10-10.0.19045-SP0
Python 3.9.18 (main, Sep 11 2023, 14:09:26) [MSC v.1916 64 bit (AMD64)]
Numpy 1.26.2
astropy 6.0.0
matplotlib 3.8.2
scipy 1.11.4
scikit-image 0.22.0
asdf 3.0.1
stdatamodels 1.8.4
gwcs 0.20.0
regions 0.8
specutils 1.12.0
specreduce 1.3.0
photutils 1.10.0
astroquery 0.4.6
pyyaml 6.0.1
asteval 0.9.31
idna 3.6
traitlets 5.14.0
bqplot 0.12.42
bqplot-image-gl 1.4.11
glue-core 1.17.1
glue-jupyter 0.20.1
glue-astronomy 0.10.0
echo 0.8.0
ipyvue 1.10.1
ipyvuetify 1.8.10
ipysplitpanes 0.2.0
ipygoldenlayout 0.4.0
ipypopout 1.2.0
Jinja2 3.1.2
voila 0.4.3
vispy 0.14.1
sidecar 0.7.0
Jdaviz 3.8.1.dev307+g9b46dbff.d20240314