Improve visualizations in the first panel of wl.visualize

[nicolejkeeney]

Improve visualizations in the first panel ("maps of individual simulations") in wl.visualize()

I improved the visualizations for the first panel in wl.visualize(). I improved the colormap, addressing this old issue Naomi raised. I also added a colorbar and reasonable plot titles. For data with more than 4 simulations, a single plot is shown with a dropdown widget for toggling between simulations. For data with 4 or fewer simulations, postage stamp maps are created.

I also added the ability for a scatter plot to be generated for data that is only a single grid cell. It's not that informative, but at least it shows you something, and doesn't throw an error :)

To test: Run the warming_levels.ipynb notebook up until wl.visualize() (section 1c in the notebook). Try a few different data options.

NOTE: I wasn't able to get to the second tab-- the one with the stats-- before I headed out of town. I'll fix that one up when I return :D

Type of change

Subtle visualization improvements None of the below applicable

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. n/a

• [ ] Test A
• [ ] Test B

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [] My changes generate no new warnings
• [n/a] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [x] Any dependent changes have been merged and published in downstream modules

[vicford]

@nicolejkeeney Testing your latest commit fixes - now noticing that when its <4 subplots the colorbar label + unit does show up now, but not for the dropdown menu version. Only other outstanding thing is that the colormap is still acting up for truly diverging data

[claalmve]

I love these changes to the warming level plots! This is a much more intuitive interpretation of the postage plots with the same scale on the colorbar.

For some reason, I'm getting this error when running warming_levels on a smaller lat/lon subset:

Lat/lon params changed:

wl.wl_params.latitude=(34.0,34.03)
wl.wl_params.longitude=(-117.5,-117.45)

[nicolejkeeney]

I love these changes to the warming level plots! This is a much more intuitive interpretation of the postage plots with the same scale on the colorbar.

For some reason, I'm getting this error when running warming_levels on a smaller lat/lon subset:

Lat/lon params changed:

wl.wl_params.latitude=(34.0,34.03)
wl.wl_params.longitude=(-117.5,-117.45)

I think this isn't related to the panel at all, the workflow raises an error in the steps above the panel when trying to load the data because there is no data in that subset.

We should probably have wl.calculate() throw an informative error if this is the case. It prints the text below, then raises a Value Error.