How can I get elegantly an upper triangle random matrix (0 elsewhere)?

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cyril on 31 May 2014

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Edited: cyril on 31 May 2014

Accepted Answer: Andrei Bobrov

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I have seen the triu and tril functions, but I can't use them to set to 0:

A = rand(4);
tril(A)=0; % won't work

any idea, other than using 2 for loops?

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Accepted Answer

Andrei Bobrov on 31 May 2014

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Edited: Andrei Bobrov on 31 May 2014

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triu(A,1)

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cyril on 31 May 2014

Edited: cyril on 31 May 2014

A = triu(rand(4), 1), yes I'm stupid

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