rand_unique_pairs(N​, pair_num, ordered, self_pair)

Version 1.2.0.0 (1.64 KB) by Yifan Gu
This function randomly generates unique integer number pairs, either ordered or unordered.
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Updated 13 Mar 2017

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This function could be handy for sampling pair-wise correlation from a large number of variables.
Input arguments:
N: defines the range of the numbers (from 1 to N)
pair_num: the number of pairs
ordered: 1 for ordered pairs and 0 for unordered. The default is 0.
self_pair: 1 for allowing self-pair (e.g, 3-3 is a self-pair). The default is 0.

Output argument:
pairs: a 2-by-pair_num matrix with each row containing a unique pair

Cite As

Yifan Gu (2025). rand_unique_pairs(N, pair_num, ordered, self_pair) (https://www.mathworks.com/matlabcentral/fileexchange/61456-rand_unique_pairs-n-pair_num-ordered-self_pair), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2006a
Compatible with any release
Platform Compatibility
Windows macOS Linux

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Version Published Release Notes
1.2.0.0

Fix some errors
1.1.0.0

Update the description.
1.0.0.0