xarray.DataArray.roll

DataArray.roll(shifts=None, roll_coords=None, **shifts_kwargs)[source]

Roll this array by an offset along one or more dimensions.

Unlike shift, roll may rotate all variables, including coordinates if specified. The direction of rotation is consistent with numpy.roll().

Parameters
  • shifts (mapping of hashable to int, optional) – Integer offset to rotate each of the given dimensions. Positive offsets roll to the right; negative offsets roll to the left.

  • roll_coords (bool) – Indicates whether to roll the coordinates by the offset The current default of roll_coords (None, equivalent to True) is deprecated and will change to False in a future version. Explicitly pass roll_coords to silence the warning.

  • **shifts_kwargs – The keyword arguments form of shifts. One of shifts or shifts_kwargs must be provided.

Returns

rolled (DataArray) – DataArray with the same attributes but rolled data and coordinates.

See also

shift

Examples

>>> arr = xr.DataArray([5, 6, 7], dims="x")
>>> arr.roll(x=1)
<xarray.DataArray (x: 3)>
array([7, 5, 6])
Dimensions without coordinates: x