Array of matrices with different size in Matlab

Question

Is it possible in Matlab to create array of matrices which have different size. For example

Array_Mat(:,:,1) = zeros(3);
Array_Mat(:,:,2) = zeros(4);

This gives error. How I can make array of matrices then?

Likely a Duplicate.

Colin T Bowers
– Colin T Bowers

2012-11-04 23:08:16 +00:00
Commented Nov 4, 2012 at 23:08 — Colin T Bowers
– Colin T Bowers, Commented Nov 4, 2012 at 23:08

jkt · Accepted Answer · 2012-11-04 23:00:35Z

7

You can use cells.

>> a{1}=[1 2 ;3 4]

a = 

    [2x2 double]

>> a{2}=zeros(4)

a = 

    [2x2 double]    [4x4 double]

>> a{1}(2,1)

ans =

     3

>> a{2}(3,4)

ans =

     0

answered Nov 4, 2012 at 23:00

jkt

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2 Comments

Roy Over a year ago

How fast is this method in compare to regular one for large matrices?

jkt Over a year ago

@Hesam, I am not sure, you may want to try the cells vs 3-D matrices, i.e. try a{1}=randn(100,100) for a{1} up to a{1000} vs a=randn(100,100,1000).

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