satpy.coords module

Utility functions for coordinates.

satpy.coords._add_crs(area, data_arr)

satpy.coords._check_crs_units(crs, x_attrs, y_attrs)

satpy.coords.add_crs_xy_coords(data_arr, area)

Add pyproj.crs.CRS and x/y or lons/lats to coordinates.

For SwathDefinition or GridDefinition areas this will add a crs coordinate and coordinates for the 2D arrays of lons and lats.

For AreaDefinition areas this will add a crs coordinate and the 1-dimensional x and y coordinate variables.

Parameters:

• data_arr (xarray.DataArray) – DataArray to add the ‘crs’ coordinate.

• area (pyresample.geometry.AreaDefinition) – Area to get CRS information from.

satpy.coords.add_xy_coords(data_arr, area, crs=None)

Assign x/y coordinates to DataArray from provided area.

If ‘x’ and ‘y’ coordinates already exist then they will not be added.

Parameters:

• data_arr (xarray.DataArray) – data object to add x/y coordinates to

• area (pyresample.geometry.AreaDefinition) – area providing the coordinate data.

• crs (pyproj.crs.CRS or None) – CRS providing additional information about the area’s coordinate reference system if available. Requires pyproj 2.0+.

Returns (xarray.DataArray): Updated DataArray object