Am having a incremental column matrix like, e.g. for 1st iteration, it is 100*1(double), then for 2nd iteration iteration, it will be 100*2(double), etc.. Form this, for 1st iteration, i need to get a random no (single data only). from 1st column of matrix and for 2nd iteration, i have to get a random no. from 2nd column of matrix only.
Thank you in advance!!@!!
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You can use
x = randperm(100); randomindex = x(1);
Then, use that index to choose an element from the appropriate column, say your data matrix is X
X(randomindex,1) %choose from first column X(randomindex,2) %choose from 2nd column
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