bundles / numpy 2.5.0.dev0+git20251130.2de293a / numpy / ma / extras / unique

function

`numpy.ma.extras:unique`

source: build-install/usr/lib/python3.14/site-packages/numpy/ma/extras.py :1267

Signature

def unique ( ar1 , return_index = False , return_inverse = False )

Summary

Finds the unique elements of an array.

Extended Summary

Masked values are considered the same element (masked). The output array is always a masked array. See numpy.unique for more details.

Examples

import numpy as np
a = [1, 2, 1000, 2, 3]
mask = [0, 0, 1, 0, 0]
masked_a = np.ma.masked_array(a, mask)

✓

masked_a
np.ma.unique(masked_a)
np.ma.unique(masked_a, return_index=True)
np.ma.unique(masked_a, return_inverse=True)
np.ma.unique(masked_a, return_index=True, return_inverse=True)

✗

See also

numpy.unique: Equivalent function for ndarrays.

Aliases

numpy.ma.unique