Random numbers

2012 4 18
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I have a problem regarding random numbers. Suppose I have a zero vector with length 10. I want to generate random numbers only on position 1,2,4,7,8. How do I generate random numbers only on these positions ? Is there any command ?

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Andrei Bobrov
Andrei Bobrov 2012-4-18

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idx = [1,2,4,7,8];
out = zeros(10,1);
out(idx)=rand(numel(idx),1);

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