Matlab-Array Division with different dimensions

Asked Aug 19 '16 at 14:36

Active Aug 19 '16 at 18:35

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I use Matlab and I have two matrices, X and Y of different dimensions: X=[X11 X21 X31;X12 X22 X32;X13 X23 X33] is of dimension 3*3. Y=[Y1;Y2;Y3] is a column vector of dimension 3*1. I want to divide each element in the rows of X by the element on the corresponding rows of Y. I wish to obtain the following matrix: Z=[X11/Y1 X21/X11/Y1 X31/X11/Y1;X12/Y2 X22/Y2 X32/Y2;X13/Y3 X23/Y3 X33/Y3]

Any help is much appreciated!

asked Aug 19 '16 at 14:36

ChinG

1

You should use the `bsxfun` solution from the duplicate rather than the accepted `repmat` solution. I'm looking for a better dup target. – beaker Aug 19 '16 at 14:40
how is this not a duplicate...surely this *must* be a duplicate – GameOfThrows Aug 19 '16 at 14:41
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This one might be better: http://stackoverflow.com/questions/3939700/how-do-i-divide-the-rows-of-a-matrix-by-different-values-in-matlab-array-divisi – beaker Aug 19 '16 at 14:43
I think bsxfun is adequate. Thanks a lot! – ChinG Aug 19 '16 at 14:43
@GameOfThrows I found, like, 3 dozen dups... the problem is trying to pick one ;) – beaker Aug 19 '16 at 14:44
@beaker :D hardest choice we all face...Naming a variable and finding the better duplicate.. – GameOfThrows Aug 19 '16 at 14:54

Matlab-Array Division with different dimensions

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