MATLAB Answers

How to convert a 3x3xN matrix to a N element cell array?

1 view (last 30 days)
Hi all,
I have a three dimension matrix of 3x3xN, where N is a large number. I want to convert it to a N elements cell array in which every cell i contains the 3x3 matrix in the i'th position. I tried to work it out using the functions 'mat2cell' and 'num2cell' but couldn't understand how to do it. I read the help for these two functions but it didn't help me.
Can it be done?
Thanks,
Alon

  0 Comments

Sign in to comment.

Accepted Answer

Alexandra Harkai
Alexandra Harkai on 21 Nov 2016
Edited: Alexandra Harkai on 21 Nov 2016
% a is your 3*3*N array
c = mat2cell(a,3,3,ones(1,N));
c = c(:);

  2 Comments

Alon Rozen
Alon Rozen on 21 Nov 2016
Thanks a lot! works like charm :) Wander why the help can't explain something like this...
Alexandra Harkai
Alexandra Harkai on 21 Nov 2016
It does actually (ie. you first want something that contains 3*3*1 elements in each cell, so according to help you need to go for [3],[3],[1 1 ...]), but that doesn't mean one doesn't get it wrong for the first try. Trial an error :)

Sign in to comment.

More Answers (1)

KSSV
KSSV on 21 Nov 2016
A = rand(3,3,100) ;
[m,n,t] = size(A) ;
iwant=mat2cell(A, m, n, ones(1,t));

  1 Comment

Alon Rozen
Alon Rozen on 21 Nov 2016
Thanks a lot! It work of cousre. I just needed the last step in the answer above.

Sign in to comment.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!