grids.py 文件源码

def change_grid_location_t_to_v(self,scalararray,conserving='area'):
        """Return a xarray corresponding to scalararray averaged at a new
        grid location.

        Parameters
        ----------
        scalararray : xarray.DataArray
            original array to be relocated
        conserving : str
            any of 'area', 'x_flux' or 'y_flux'.
              - 'area' : conserves the area
              - 'x_flux' : conserves the flux in x-direction (eastward)
              - 'y_flux' : conserves the flux in y-direction (northward)
        """
        check_input_array(scalararray,\
                          chunks=self.chunks,grid_location='t',ndims=self.ndims)
        wi, wo = self._weights_for_change_grid_location(input='t',output='v',
                                                        conserving=conserving)
        out = self._to_northern_grid_location(scalararray,weights_in=wi,
                                                         weights_out=wo)
        return _append_dataarray_extra_attrs(out,grid_location='v')