xarray_to_video and coastlines

[JimCircadian]

Related to #97, probably worth tackling as one. Worth offering non contour options for landmasks too.

[JimCircadian]

Cartopy and FuncAnimation don't yet appear to operate well together, so placing a hold on investigating this for the driving force of the functionality, but have added ax_init and ax_extra arguments that help in allowing this to happen.

[JimCircadian]

@tom-andersson mentioned this alternative to the matplotlib native animation library for producing videos. Might be worth a look (perhaps as an optional dependency?)

[JimCircadian]

A quick look suggests that it's directly integrated with matplotlib, so testing alongside cartopy will be prudent

[ots22]

I was playing around with FuncAnimation with cartopy and have something working in a notebook. I could try to get this into xarray_to_video, but is this still worth pursuing given the above?

[JimCircadian]

Nice one @ots22. Is it a solution that can hijack those new options or something that requires re-engineering of xarray_to_video? If it won't break the existing mechanics of then definitely go for it, I'd prefer that option than including new dependencies if I'm honest! 😉

[ots22]

I'm not completely sure yet! I suspect it might need some changes to xarray_to_video but I'll try to avoid breaking the existing interface.

[JimCircadian]

That's perfect! Don't worry toooooo much about investing loads of time on this though, it's really very very simple to stitch the necessary frames together for what we're trying to achieve and we have to produce individual frames anyway. 😉 I'll send you a message on slack