How to convert 2D vector to 3D vector in GeoPlotter

[tkoyama010]

When plotting the following vectors drawn in cartopy in GeoVista, the 2D vectors need to be converted to vectors of 3D coordinates. This thread discusses this mathematical aspect and prepares for future implementation in GeoVista.

The reference document is below. (The language of the document is Japanese for the convenience of the author. Please translate it and check it.)
https://physmemo.shakunage.net/spherical/spherical.html

[bjlittle]

@dennissergeev Do you have prior experience of this? I know that you've dabbled in this space 🤔

[dennissergeev]

Thanks for raising this @tkoyama010, this is something I really want to see in geovista too! (see #16)

A while ago I added this function to pyvista. A somewhat convoluted example of applying it to some model data is here.

It'd be great to create a clean and convenient function to plot vector glyphs in geovista using these building blocks...