How can I combine two matrix ?

2 vues (au cours des 30 derniers jours)
Fox
Fox le 8 Jan 2016
Commenté : Fox le 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 commentaires
jgg
jgg le 8 Jan 2016
Is there a reason you don't want to use a loop to do this?
Fox
Fox le 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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Réponse acceptée

Roger Stafford
Roger Stafford le 8 Jan 2016
e = reshape([reshape(repmat(e1,7,1),[],49);repmat(e2,1,7)],[],2*49);
  1 commentaire
Fox
Fox le 9 Jan 2016
Thank you.

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Plus de réponses (1)

James Tursa
James Tursa le 8 Jan 2016
Another way:
[y x] = ndgrid((1:7)+7,(1:7));
z = [x(:)';y(:)'];
ee = [e1 e2];
e = ee(:,z(:));
  1 commentaire
Fox
Fox le 9 Jan 2016
Thanks.

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