How can I combine two matrix ?

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Fox
Fox am 8 Jan. 2016
Kommentiert: Fox am 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 Kommentare
jgg
jgg am 8 Jan. 2016
Is there a reason you don't want to use a loop to do this?
Fox
Fox am 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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Akzeptierte Antwort

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

Weitere Antworten (1)

James Tursa
James Tursa am 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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