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Could anyone help me how to randomly display the values in the selected places

Asked by jaah navi on 5 Jun 2019
Latest activity Commented on by TADA
on 5 Jun 2019
Could anyone help me how to randomly display the values in any of the selected places
1
3
4
5
8
9
10
11
13
15
of (3,5) matrix under the condition that under the condition that every rows and columns should be selected with one above mentioned places.

1 Answer

Answer by TADA
on 5 Jun 2019
Edited by TADA
on 5 Jun 2019

if you meant to fetch values from a random index using above mentioned linear indices:
a = magic(5);
a = a(1:3,:);
validIndices = [1,3,4,5,8,9,10,11,13,15];
i = validIndices(randperm(numel(validIndices),1));
x = a(i)
but if you meant to use them as subsets (i.e a(i,j)), you have a problem, because these subsets are larger than your specified matrix, and will almost always result in an error

  3 Comments

it gives only one value but i want to every row and every column one non zero vaue.
well, that cannot be understood from your question
also that makes this question a duplicate if im not mistaken....

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