cupy.unravel_index#

cupy.unravel_index(indices, dims, order='C')[source]#

Converts array of flat indices into a tuple of coordinate arrays.

Parameters:

indices (cupy.ndarray) – An integer array whose elements are indices into the flattened version of an array of dimensions dims.
dims (tuple of ints) – The shape of the array to use for unraveling indices.
order ('C' or 'F') – Determines whether the indices should be viewed as indexing in row-major (C-style) or column-major (Fortran-style) order.

Returns:

Each array in the tuple has the same shape as the indices array.

Return type:

tuple of ndarrays

Examples

>>> cupy.unravel_index(cupy.array([22, 41, 37]), (7, 6))
(array([3, 6, 6]), array([4, 5, 1]))
>>> cupy.unravel_index(cupy.array([31, 41, 13]), (7, 6), order='F')
(array([3, 6, 6]), array([4, 5, 1]))

Warning

This function may synchronize the device.