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From: James Tursa on 31 Mar 2010 11:41
"Sumeer " <zippystokes(a)hotmail.com> wrote in message <hov3he$p5f$1(a)fred.mathworks.com>...
> Hi Guys,
> New user to Matlab. I have to write an engineering program in Matlab, & need to remap entries in 3 different 6x6 matrices, to make a large 18x18 matrix. Any suggestions on how I might go about this?
> regards
> Sumeer

Not sure how you want them combined from your limited post. Generally you can use the [ ; ] operation (concatenation) to do this. Since this is an engineering problem and you have only given us three pieces, I am guessing that this is a symmetric system. If so, then you can do this:

A = upper left 6 x 6 block.
C = lower left 6 x 6 block.
D = upper right 6 x 6 block.

M = [A C'; C D]

If this is not what you want then please post a more detailed question.

James Tursa
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