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Saeid
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Rearranging Array Rows into Multiple Blocks while Maintaining the Old Order

Asked by Saeid
on 18 Mar 2019
Latest activity Commented on by Saeid
on 18 Mar 2019
How can I rearrange an array from alternating rows to multiple blocks, maintaining the order of the rows?

  2 Comments

please illustrate with a input and the desired output as text instead of picture
The matrix:
[a a a a a;
b b b b b;
c c c c c;
d d d d d;
e e e e e ;
f f f f f ]
should be converted to:
[a a a a a ;
c c c c c;
e e e e e ;
b b b b b;
d d d d d ;
f f f f f];

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2 Answers

Answer by Jos (10584)
on 18 Mar 2019
 Accepted Answer

You should learn about indexing, one of the most essential aspects of Matlab:
M = randi(4,10,5) ; M(:,1) = 1:size(M,1) % example data
M2 = M([1:2:end 2:2:end], :) % re-ordering the rows

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Answer by madhan ravi
on 18 Mar 2019
Edited by madhan ravi
on 18 Mar 2019

reshape(matrix,[],size(matrix,2))

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