Generate boundary automatically based on centers

[zxdawn]

Usually the satellite data only have the pixel center data, it would be nice to generate the boundary automatically. Here's one example using xgcm to create the boundary arrays.

BTW, we want to support xESMF conservative regridder in pyresample. The auto boundary could make it easier.

[aulemahal]

If you data is using a regular lat and lon grid (both coordinates being 1D), then cf-xarray has a function for that! Moreover, this function is already used by xESMF when bounds are missing.

There is an issue there for extending the function to 2D coordinates : xarray-contrib/cf-xarray#71.
Maybe the code from xgcm could be adapted and transposed there?

[zxdawn]

Thanks. I have mentioned the xgcm to cf-xarray issue. Should I keep this open until it's supported?

[huard]

I suggest to close this and open a new issue once there is functionality ready in cf-xarray that can be integrated here.