Repeat every element in matrix

Dears,
I have a matrix A(3200,3), I want to repeat each element (not repeat the matrix)in this matrix 200 times.
Thank you

2 commentaires

per isakson
per isakson le 28 Juin 2013
row-wise or column-wise?
Ahmed Hussein
Ahmed Hussein le 28 Juin 2013
Modifié(e) : Ahmed Hussein le 28 Juin 2013
A=[0 0 0 I want A to be A=[ 0 0 0 0 0 0 . 0 0 0 . . . . and so on to 200 times then the second element and so on.

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 Réponse acceptée

Roger Stafford
Roger Stafford le 28 Juin 2013
Modifié(e) : Roger Stafford le 28 Juin 2013

1 vote

A = reshape(repmat(A(:)',200,1),[],3);
This repeats the elements in the columns. If you want to repeat the along the rows do this:
A = reshape(repmat(reshape(A',[],1),1,200)',[],size(A,1))';
(Corrected)

4 commentaires

Ahmed Hussein
Ahmed Hussein le 28 Juin 2013
Thank you very much.. I want to repeat each row (200) times I mean 0 0 0 (first row) 0 0 0 0 0 0 0 0 0 to 200 times so should I use
A = reshape(repmat(reshape(A',[],1),[],*200*)',9,[])'; ??
No, don't use that one. I corrected it to:
A = reshape(repmat(reshape(A',[],1),1,200)',[],size(A,1))';
(I had a senior moment.)
Ahmed Hussein
Ahmed Hussein le 28 Juin 2013
Thanks a lot, it is very useful.....
That code I gave you has one more transpose than is necessary. You can do it this way instead:
A = reshape(repmat(reshape(A',1,[]),200,1),[],size(A,1))';

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