union1d(ar1, ar2)
Return the unique, sorted array of values that are in either of the two input arrays.
Input arrays. They are flattened if they are not already 1D.
Unique, sorted union of the input arrays.
Find the union of two arrays.
numpy.lib.arraysetops
Module with a number of other functions for performing set operations on arrays.
>>> np.union1d([-1, 0, 1], [-2, 0, 2]) array([-2, -1, 0, 1, 2])
To find the union of more than two arrays, use functools.reduce:
>>> from functools import reduceSee :
... reduce(np.union1d, ([1, 3, 4, 3], [3, 1, 2, 1], [6, 3, 4, 2])) array([1, 2, 3, 4, 6])
The following pages refer to to this document either explicitly or contain code examples using this.
dask.array.routines.union1d
numpy.ma.extras.union1d
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