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From: "Luana Caselli" <luanacaselli@hotmail.com>
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Subject: matrices elements
Date: Mon, 6 Aug 2007 14:53:06 +0000 (UTC)
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Hi all!

I have 2 matrices of the same size. I want to select 
particular elements (for example, all values ==1) from one 
of the two and then extract values from the second matrix 
which have the same position (row, column) of the selected 
values in the first matrix.

If someone can help me...

Thanks a lot!