Improving plot_ppi_section for unordered VCPs (e.g., 88D SAILS)

[deeplycloudy]

When WSR-88D data are in a SAILS VCP mode (elevation pattern below), it causes the PPI cross section plot to drop or oddly overplot some rays. This can be worked around with a manual call to extract_sweeps, but I propose that this situation be automatically detected and corrected for the user.

The list of elevations angles is: [0.48339844, 0.48339844, 0.87890625, 0.87890625, 1.31835938, 1.31835938, 0.48339844, 0.48339844, 1.80175781, 2.41699219, 3.12011719, 0.48339844, 0.48339844, 3.99902344, 5.09765625, 6.41601562, 7.99804688, 0.48339844, 0.48339844, 10.01953125, 12.48046875, 15.60058594, 19.51171875]

Before extract_sweeps

After extract_sweeps

Thanks to Jessica S., an undergraduate working with me, for pointing out this bug and finding the workaround.

[scollis]

Thanks @deeplycloudy and Jessica! A PR on this would be most welcome.. Suggest having a method that can be called by the user and then called automatically by plot ppi xsects.. We have some travel coming up but can help in a few weeks

[deeplycloudy]

I finally had time to write up a draft of this. I put it in a gist for now.

[scollis]

Fantastic.. I’m at AGU this week and Zach is busy with his AMS talk, but we will get to this soon. Looks fairly straightforward.. we will want to design some tests

Thanks Eric!

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On Dec 7, 2018, at 4:00 PM, Eric Bruning [email protected] wrote:

I finally had time to write up a draft of this. I put it in a gist for now.

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