polartoolkit.block_reduce

block_reduce(df, reduction, input_coord_names=('x', 'y'), input_data_names=None, **kwargs)

perform a block reduction of a dataframe.

Parameters:

• df (DataFrame) – data to block reduce

• reduction (Callable[..., float | int]) – function to use in reduction, e.g. np.mean

• input_coord_names (tuple[str, str]) – strings of coordinate column names, by default (“x”, “y”) or (“easting”, “northing”)

• input_data_names (Any | None) – strings of data column names, by default None

• kwargs (Any)

Returns:

a block-reduced dataframe

Return type:

DataFrame