get_uniques_and_compacted#

skrough.unique.get_uniques_and_compacted(values: ndarray) → Tuple[ndarray, ndarray][source]#

Get unique values and compacted version of an input array.

Get unique elements (reported in ascending order) together with a compacted version of the input array values. The compacted array is consisted of indices of the unique values that can be used to reconstruct the original array.

Parameters:

values – Input array.

Returns:

Result is a 2-element tuple consisted of the following elements

  • unique values (reported in ascending order) of the input array

  • compacted version of the input array in the form of indices of unique values that can be used to reconstruct the original input array

Examples

>>> get_uniques_and_compacted(np.array([1, 2, 3]))
(array([1, 2, 3]), array([0, 1, 2]))
>>> get_uniques_and_compacted(np.array([3, 2, 1]))
(array([1, 2, 3]), array([2, 1, 0]))
>>> get_uniques_and_compacted(np.array([33, 11, 33, 33, 22]))
(array([11, 22, 33]), array([2, 0, 2, 2, 1]))