Bnb/nc collection

[bnb32]

Add is_regular_grid arg for CollectorNC. If True set 1D lat / lon arrays for spatial chunks and combine by coords.

[grantbuster]

I like this but i think we could in the future collect curvilinear rectangles just by knowing that the chunks are always ordered in a certain way (row major?). Question would be how to set enumerated coordinates. Maybe just iterate through the sorted chunks knowing you're going through the rows and set the x/y enumerated coordinates incrementally. This would break when you do a masked fwp.

[bnb32]

I like this but i think we could in the future collect curvilinear rectangles just by knowing that the chunks are always ordered in a certain way (row major?). Question would be how to set enumerated coordinates. Maybe just iterate through the sorted chunks knowing you're going through the rows and set the x/y enumerated coordinates incrementally. This would break when you do a masked fwp.

Not sure I follow the enumerated coords stuff but generally I think this is a good idea. We'd have to know how many lat / lon chunks there are though so we know when were incrementing through constant lats vs constant lons (maybe this is what you're referring to) but otherwise it could work. Will still require extra logic on top of xr.combine_by_coords but doing could do it with xr.concat over lats and then xr.concat across lons. I'll mull over this more for an improvement down the road. Masking will def break stuff - I think really the best way to handle that case is with h5s.