select random values from vector

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Hello Matlab
Hello Matlab on 4 Feb 2015
Answered: Stalin Samuel on 4 Feb 2015
I have a vector:
[R1,R2]= Where R1 = 7 3 3 5 3
R2 = 5 5 5 4 6
I want to randomly select one of these pairs, like [7,5]. How I can do this in Matlab?

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Answers (2)

Azzi Abdelmalek
Azzi Abdelmalek on 4 Feb 2015
idx1=randi(numel(R1))
idx2=randi(numel(R2))
out=[R1(idx1) R2(idx2)]
Stalin Samuel
Stalin Samuel on 4 Feb 2015
c1 = randi([1 numel(R1)],1,1)
c2 = randi([1 numel(R2)],1,1)
result = [R1(c1) R2(c2)]
or
result = [R1(c1) R2(c1)]

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