multi_index.py 文件源码

def create_multi_index(arr):
    '''From DataArray arr make a pandas.MultiIndex for the arr.coords

    Parameters
    ----------

    arr: xarray.DataArray

    Returns
    -------

    index: pandas.MultiIndex instance with index names
           taken from arr.dims and levels taken from arr.coords

    Examples
    --------

    '''
    np_arrs = tuple(getattr(arr, dim).values for dim in arr.dims)
    index = pd.MultiIndex.from_product(np_arrs, names=arr.dims)
    return index