How can I merge this two commands in one in Matlab?
Temp = diag(diag(A));
X = Temp(:)
Something like
X = diag(diag(A))(:)
does not work.
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seems Matlab's been lagging too much in [implementing that syntax](http://wiki.octave.org/FAQ#Coherent_syntax). It's valid in GNU Octave. – carandraug Nov 27 '12 at 23:59
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See [how-can-i-index-a-matlab-array-returned-by-a-function-without-first-assigning-it](http://stackoverflow.com/questions/3627107/how-can-i-index-a-matlab-array-returned-by-a-function-without-first-assigning-it) for another solution. But really, it is more trouble than it is worth. – Colin T Bowers Nov 28 '12 at 00:10
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If you really want to, you can do:
X = reshape(diag(diag(A)),[],1)
I'm not sure you gain much by doing that though!
nbeuchat
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