xarray.DataArray.unstack¶
-
DataArray.
unstack
(dim=None)¶ Unstack existing dimensions corresponding to MultiIndexes into multiple new dimensions.
New dimensions will be added at the end.
Parameters: - dim : str or sequence of str, optional
Dimension(s) over which to unstack. By default unstacks all MultiIndexes.
Returns: - unstacked : DataArray
Array with unstacked data.
See also
Examples
>>> arr = DataArray(np.arange(6).reshape(2, 3), ... coords=[('x', ['a', 'b']), ('y', [0, 1, 2])]) >>> arr <xarray.DataArray (x: 2, y: 3)> array([[0, 1, 2], [3, 4, 5]]) Coordinates: * x (x) |S1 'a' 'b' * y (y) int64 0 1 2 >>> stacked = arr.stack(z=('x', 'y')) >>> stacked.indexes['z'] MultiIndex(levels=[[u'a', u'b'], [0, 1, 2]], labels=[[0, 0, 0, 1, 1, 1], [0, 1, 2, 0, 1, 2]], names=[u'x', u'y']) >>> roundtripped = stacked.unstack() >>> arr.identical(roundtripped) True