Regridding error with non-sequence output

[angus-g]

The recent release of xESMF 0.8.3 incorporates #332, which seems to have a bit of a logic bug in the case of a non-sequence output. With reference to the following code, the horizontal/vertical dimensions get renamed to x_out and y_out respectively. This means they differ from the original values in the out_coords dictionary, so the newly-added rename operation fails (ValueError: cannot rename 'lon' because it is not a variable or dimension in this dataset)

xESMF/xesmf/frontend.py

Lines 1023 to 1034 in d32b5f4

	if self.sequence_out:
	ds_out = ds_out.rename({self.out_horiz_dims[1]: 'x_out'})
	out_chunks = ds_out.chunks.get('x_out')
	else:
	ds_out = ds_out.rename(
	{self.out_horiz_dims[0]: 'y_out', self.out_horiz_dims[1]: 'x_out'}
	)
	out_chunks = [ds_out.chunks.get(k) for k in ['y_out', 'x_out']]
	# Rename coords to avoid issues in xr.map_blocks
	for coord in list(self.out_coords.keys()):
	ds_out = ds_out.rename({coord: coord + '_out'})

[huard]

@charlesgauthier-udm