How can I combine two matrix ?

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Fox
Fox on 8 Jan 2016
Commented: Fox on 9 Jan 2016
Hi I want to combine two matrix(matrix1= e1(743,7), matrix2= e2(743,7)), in the form of taking the first column of the first matrix and then the first from matrix2 then again the first from matrix1 and the second from matrix2 and so on. =>
e=[e1(:,1),e2(:,1),e1(:,1),e2(:,2)...,e1(:,1),e2(:,7),e1(:,2),e2(:,1)...,e1(:,2),e2(:,7),...,e1(:,7),e2(:,1)...e1(:,7),e2(:,7)]
Can somebody helps me how to create such a matrix e which is than a 743:49 matrix?
  2 Comments
jgg
jgg on 8 Jan 2016
Is there a reason you don't want to use a loop to do this?
Fox
Fox on 8 Jan 2016
No my problem is I'm not so sure how to program this. I mean the following isn't correct.
for i=1:7
for s=1:7
e(:,i+s)=[e(:,i),e(:,s)];
end
end
There I get the wrong solutions.

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Accepted Answer

Roger Stafford
Roger Stafford on 8 Jan 2016
e = reshape([reshape(repmat(e1,7,1),[],49);repmat(e2,1,7)],[],2*49);

More Answers (1)

James Tursa
James Tursa on 8 Jan 2016
Another way:
[y x] = ndgrid((1:7)+7,(1:7));
z = [x(:)';y(:)'];
ee = [e1 e2];
e = ee(:,z(:));

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