How can I combine two matrix ?

2 次查看（过去 30 天）
Fox
Fox 2016-1-8
评论： Fox 2016-1-9
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 个评论
jgg
jgg 2016-1-8
Is there a reason you don't want to use a loop to do this?
Fox
Fox 2016-1-8
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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采纳的回答

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

更多回答（1 个）

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

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