grid_deltas_from_dataarray#

metpy.xarray.grid_deltas_from_dataarray(f, kind='default')[source]#

Calculate the horizontal deltas between grid points of a DataArray.

Calculate the signed delta distance between grid points of a DataArray in the horizontal directions, using actual (real distance) or nominal (in projection space) deltas.

Parameters:

f (xarray.DataArray) – Parsed DataArray (metpy_crs coordinate must be available for kind=”actual”)
kind (str) – Type of grid delta to calculate. “actual” returns true distances as calculated from longitude and latitude via lat_lon_grid_deltas. “nominal” returns horizontal differences in the data’s coordinate space, either in degrees (for lat/lon CRS) or meters (for y/x CRS). “default” behaves like “actual” for datasets with a lat/lon CRS and like “nominal” for all others. Defaults to “default”.

Returns:

dx, dy – arrays of signed deltas between grid points in the x and y directions with dimensions matching those of f.