xarray.DataArray.dot¶
-
DataArray.
dot
(other, dims=None)¶ Perform dot product of two DataArrays along their shared dims.
Equivalent to taking taking tensordot over all shared dims.
- Parameters
other (DataArray) – The other array with which the dot product is performed.
dims ('...', hashable or sequence of hashables, optional) – Which dimensions to sum over. Ellipsis (‘…’) sums over all dimensions. If not specified, then all the common dimensions are summed over.
- Returns
result – Array resulting from the dot product over all shared dimensions.
- Return type
See also
dot()
,numpy.tensordot()
Examples
>>> da_vals = np.arange(6 * 5 * 4).reshape((6, 5, 4)) >>> da = xr.DataArray(da_vals, dims=["x", "y", "z"]) >>> dm_vals = np.arange(4) >>> dm = xr.DataArray(dm_vals, dims=["z"])
>>> dm.dims ('z')
>>> da.dims ('x', 'y', 'z')
>>> dot_result = da.dot(dm) >>> dot_result.dims ('x', 'y')