Group all the columns every N rows

Hi everyone,

i have an array like this:

A

0.5 0.4 0.5

0.9 0.3 0.5

0.5 0.5 0.1

0.5 0.4 0.2

0.9 0.8 0.2

0.3 0.5 0.2

and i want to create a cell arrays like these (group all the columns every N rows, with N=2):

{A1}

0.5 0.4 0.5

0.9 0.3 0.5

{A2}

0.5 0.5 0.1

0.5 0.4 0.2

{A3}

0.9 0.8 0.2

0.3 0.5 0.2

How can i do it?

Thank you very much!

Answer 1

[madhan ravi]

Your way:

N=2;
A=mat2cell(a,repelem(N,size(a,1)/N));
celldisp(A)

Answer 2

[madhan ravi]

One way:

N=2;
[~,c]=size(A);
U=reshape(A',c,N,[]);
R=permute(U,[2 1 3])

[Riccardo Rossi]

I'm sorry if i have an array like this:

0.4 0.9 0.4 0.7 0.2 0.01 0.2 0.7

how can i permute the array in another like this?:

0.4 0.9 0.4 0.7

0.2 0.01 0.2 0.7

Thank you!

[madhan ravi]

reshape(a,numel(a)/2,[])' % where a your array

[Riccardo Rossi]

Sorry but it does not run. I improve my example. I have an array like this:

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16

17 18 19 20 21 22 23 24

25 26 27 28 29 30 31 32

how can i permute the array in another like this?:

1 2 3 4

9 10 11 12

17 18 19 20

25 26 27 28

5 6 7 8

13 14 15 16

21 22 23 24

29 30 31 32

Thank you so much!

[madhan ravi]

I see you have asked another question regarding this issue but here is one solution:

N=4;
[m,c]=size(A);
U=reshape(A',m,[],N);
R=permute(U,[1 3 2]);
BB=reshape(R,N,[],1)'