how to change what is under the diagonals in a matrix into Zeros

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Brian Nuttall
Brian Nuttall le 31 Mar 2015
Réponse apportée : Matt J le 31 Mar 2015
how do i turn what is under the diagonal on a matrix into zeros. for example i cant figure out how to do the following.
[1 2 3,4 5 6,7 8 9]
into
[1 2 3,0 5 6,0 0 9]

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Matt J
Matt J le 31 Mar 2015
See the TRIU command.

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