first_derivative# rojak.core.derivatives.first_derivative(array: DataArray, grid_spacing_in_meters: ndarray[tuple[int, ...], dtype[_ScalarType_co]] | DataArray, axis: int) → DataArray[source]# Parameters: array (DataArray) grid_spacing_in_meters (ndarray[tuple[int, ...], dtype[_ScalarType_co]] | DataArray) axis (int) Return type: DataArray