Pick three numbers at random from a vector
17 views (last 30 days)
Show older comments
How do you pick three numbers at random from a vector?
So I have a=1:10, a1=a(1:2:end) and I want to select three numbers at random from a1. I've tried a2=randperm(a1,3) but I get an error :
Error using randperm
Inputs must be nonnegative scalar integers.
Any help is greatly appreciated!!
Accepted Answer
Image Analyst
on 13 Feb 2015
Try this:
a=1:10;
a1=a(1:2:end)
indexesToUse = randperm(numel(a1),3) % 3 random indexes
a2 = a1(indexesToUse) % Extract 3 values from a1
More Answers (0)
See Also
Categories
Find more on Resizing and Reshaping Matrices in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!