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numpy.union1d(ar1, ar2)[source] -
Find the union of two arrays.
Return the unique, sorted array of values that are in either of the two input arrays.
Parameters: ar1, ar2 : array_like
Input arrays. They are flattened if they are not already 1D.
Returns: union1d : ndarray
Unique, sorted union of the input arrays.
See also
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numpy.lib.arraysetops - Module with a number of other functions for performing set operations on arrays.
Examples
12>>> 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:
123>>>fromfunctoolsimportreduce>>>reduce(np.union1d, ([1,3,4,3], [3,1,2,1], [6,3,4,2]))array([1,2,3,4,6]) -
numpy.union1d()
2025-01-10 15:47:30
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