numpy.unravel_index¶

numpy.unravel_index(indices,dims,order='C')¶

Converts a flat index or array of flat indices into a tupleof coordinate arrays.

Parameters:

indices:array_like An integer array whose elements are indices into the flattenedversion of an array of dimensionsdims. Before version 1.6.0,this function accepted just one index value. dims:tuple of ints The shape of the array to use for unravelingindices. order:{‘C’, ‘F’}, optional Determines whether the indices should be viewed as indexing inrow-major (C-style) or column-major (Fortran-style) order. New in version 1.6.0.

Returns:

unraveled_coords:tuple of ndarray Each array in the tuple has the same shape as theindicesarray.

See also

ravel_multi_index

Examples

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

>>>np.unravel_index(1621,(6,7,8,9))(3, 1, 4, 1)