dividing a matrix into 10 submatrices

Question

I have a matrix [x y] of size [86 86]. I want to divide this matrix into 10 sub matrix. For thr last matrix there will be shortage of coordinates but can be padded with zeros.

[x y] = size(I)
nSub = 10;
B = mat2cell(I, 2*ones(size(I,1)/2,1), 2*ones(size(I,2)/2,1))

I tried using mat2cell function but the output didn't come well. Can any one tell me where am going wrong or can I change this function

Pad the matrix with zeros and apply [this](http://stackoverflow.com/a/20337173/2586922). Let me know if it works so I can mark this as duplicate — Luis Mendo, Jun 23 '15 at 11:56

score 2 · Answer 1 · answered Jun 23 '15 at 12:16

2

Does this work for you?

I = rand(86,86);
[x y] = size(I)
nSub = 10;

%// padding
xp = x + nSub - mod(x,nSub);
yp = y + nSub - mod(y,nSub);
I(xp,yp) = 0;

%// submatrices
B = mat2cell(I, nSub*ones(xp/nSub,1),nSub*ones(yp/nSub,1))

enter image description here

answered Jun 23 '15 at 12:16

Robert Seifert

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dividing a matrix into 10 submatrices

1 Answers1