More Scipy interpolation methods for interp?

[meggart]

Hi there,

I am quite new to xarray and was wondering today if there is a specific reason why 'previous' and next are omitted from the available scipy interpolation methods when using DataArray.interp. Maybe there is some other conical way in xarray to fill with previous/consecutive values? Or would it be worth making a PR that adds the additional methods to the method list (I just tried and it works....)

[dcherian]

I think those have been added after the xarray method was implemented. It should be easy to implement, maybe as simple as extending this list?

xarray/xarray/core/missing.py

Lines 455 to 463 in fbd48d4

	interp1d_methods = [
	"linear",
	"nearest",
	"zero",
	"slinear",
	"quadratic",
	"cubic",
	"polynomial",
	]

PRs welcome!

[meggart]

maybe as simple as extending this list?

Yes, this is exactly what I did on my local copy and it worked. The only reason I was asking here was that it felt too simple to be true, So yes, I will prepare a PR.