Matrix elements movement in MATLAB

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Raza
Raza on 19 Feb 2014
Commented: Alina on 7 Mar 2014
HI, I want to move the matrix elements as desired like
a=[1 2 3 4;
5 6 7 8;
9 10 11 12;
13 14 15 16]
now i want to make it
a=[3 4 8 7;
11 12 16 15;
14 13 9 10;
6 5 1 2]
how can i do it in MATLAB

Answers (1)

Azzi Abdelmalek
Azzi Abdelmalek on 19 Feb 2014
Edited: Azzi Abdelmalek on 19 Feb 2014
a=[1 2 3 4;
5 6 7 8;
9 10 11 12;
13 14 15 16]
n=size(a,2);
n2=n/2;
a1=a(:,n2+1:n);
a2=a(:,1:n2);
a1(2:2:end,:)=fliplr(a1(2:2:end,:))
a2(2:2:end,:)=fliplr(a2(2:2:end,:))
a2=flipud(a2)
out=reshape([a1' a2'],n,[])'
  2 Comments
Alina
Alina on 7 Mar 2014
the opposite of above coding can be used to convert this matrix back to its initial position
Am i right?

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