how to append "specific columns" in an array

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pooja
pooja on 20 Mar 2014
Commented: pooja on 20 Mar 2014
hello ,
i tried so many combinations of codes using reshape and permute function but i couldn't get the desired output
suppose my array looks like
0 0
0 0
1 1
0 1
there are 2 columns and i want to take 1st column and copy it in 2nd and 3rd column , but i want to append it , i dont want to overwrite existing columns
so as a result i want 6 columns
0 0 0 0 0 0
0 0 0 0 0 0
1 1 1 1 1 1
0 0 0 1 1 1
i tried 2 clear my problem .... Can AnyOne Help With This Please??
I am Looking for Generalized code that can work for every array
  2 Comments
pooja
pooja on 20 Mar 2014
sorry i edited the mistake ...does it look ok now ?

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Accepted Answer

Mischa Kim
Mischa Kim on 20 Mar 2014
Edited: Mischa Kim on 20 Mar 2014
Pooja, use
B = reshape(repmat(A,3,1),length(A(:,1)),[])
assuming the first column is (supposed to be, typo?) equal to the second one in the 12-column matrix.
  4 Comments
pooja
pooja on 20 Mar 2014
oh now it works all fine....thank you so much Mr.Mischa Kim :)

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More Answers (1)

Chandrasekhar
Chandrasekhar on 20 Mar 2014
A = [0 0 0 0;0 0 1 0;1 1 1 1;0 1 0 1];
appending 1st column of A at the end|
A = [A A(:,1)];
  1 Comment
pooja
pooja on 20 Mar 2014
Though its not i was looking for ,Thank you for replying :)

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