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From: Artur Racu on 11 May 2010 09:31
"Oleg Komarov" <oleg.komarovRemove.this(a)hotmail.it> wrote in message <hsb43b$ruc$1(a)fred.mathworks.com>...
> "Artur Racu"
> > hy everybody,
> >
> > how can help me, i hve a retangular matrix and belove the diagonal i have zeros how can i remove them without removing zeros above the diagonal,
> >
> > thank you,
> > Artur
>
> I suppose you have, for example purposes:
> rectM = rand(3,4)
> rectM =
> 0.35 0.55 0.76 0.57
> 0.83 0.92 0.75 0.08
> 0.59 0.29 0.38 0.05
>
> Then, creating the index for the elements under the diagonal:
> IDXl = logical(tril(ones(size(rectM)),-1))
> IDXl =
> 0 0 0 0
> 1 0 0 0
> 1 1 0 0
>
> Finally I don't know what you mean by removing elements...I interpret it as NaNning them out:
> rectM(IDXl) = NaN
> rectM =
> 0.35 0.55 0.76 0.57
> NaN 0.92 0.75 0.08
> NaN NaN 0.38 0.05
>
> Oleg

thank you,

i found a new solution, i made a loop for extracting the upper part of the matrix,

thanks anyway,

Artur
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