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JiaweiZhuang / cubedsphere

Cubed-Sphere data processing with xarray
MIT License
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Implement Cubed Sphere Grid Generation / Plotting #1

Closed darothen closed 7 years ago

darothen commented 7 years ago

This is a first batch of code to incorporate into the cubedsphere library for very detailed plotting on the native cubed sphere mesh. The initial batch of code focuses on a CSGrid object to compute the grid geometry. Plotting functions to follow shortly.

It's anticipated that we'll need to heavily re-factor this code once we identify a usage pattern for how we envision people to plot their data.

JiaweiZhuang commented 7 years ago

This looks good! The cubedsphere coordinate is consistent with FV3 output.

I've applied some bug fixes directly to my master branch. Seems like calc_ϕ_on_great_circle is not used for grid calculation?

darothen commented 7 years ago

Correct; it's used for plotting, though, because we have to tweak the polygon mesh underlying the Patch collection I create if they cross the edge of the plot for certain projections. I'll pull a new branch against the updated master with plotting routines. They're a bit more brittle because I have to make assumptions about how each face in the data is oriented, but once you see it I'm sure that it can be generalized.