nsrdb.utilities.interpolation.spatial_interp

spatial_interp(var, data, native_grid, new_grid, method, dist, ind, elevation_correct)[source]

Perform single variable spatial interpolation on MERRA data array.

Parameters:

  • var (str) – NSRDB variable name.

  • data (np.ndarray) – 2D data array (time X sites) for a single variable.

  • native_grid (pd.DataFrame) – Native grid associated with the input data. Should have column for elevation.

  • new_grid (pd.DataFrame) – New grid associated with the output data. Should have column for elevation.

  • method (str) – Interpolation method (IDW for inverse distance weighted, NN for nearest neighbor, AGG for aggregation). Last character can be an integer to set IDW power or number of AGG neighbors.

  • dist (ndarray) – Distance array in km returned if return_dist input arg set to True.

  • indicies (ndarray) – 1D array of row indicies in native_grid that match new_grid.

  • elevation_correct (bool) – Flag to perform elevation correction.

Returns:

out_array (np.ndarray) – 2D data array (time X sites) with sites matching the new_grid resolution.