How to make cell array size equal in matlab

Question

I have a cell array. For example, The dimension of this cell is [2x3 , 3x3 , 2x4]. I want to find the maximum size of this array and make this cell array in equal size. I want to add zeros to the minimum cell size to make it as equal to maximum cell size.

I tried with this code:

sz = cellfun(@(x)size(x,2), A);
minLength = min(sz);
B = cell2mat(cellfun(@(x)x(1:minLength), A, 'uniformoutput', false));'

But its not working. It would be nice if anybody help me out.

• Ofek Shilon: What's the dimension of the cell again? I can understand [3, 3, 4] or [2 3 2] but not [2x3, 3x3, 2x4]
• Md. Abdur Rahim: In my cell array , there are three cell element and each cell element has different size. Thats why I wrote {2x3, 3x3, 2x4}. @OfekShilon
• sco1: Can you please provide the desired output for the {[2x3], [3x3], [2x4]} case? I'm not really understanding what the goal is.
• DVarga: I really can't understand what you want. Do you want a row-matrix as an output (filled with zeros)? And if yes, in what dimensions? Or?

Answer 1

This should work

A = {rand(2,3), rand(3,3), rand(2,4)}
% Find the maximum numbers rows (dims(1)) and the maximum number of columns (dims(2))
dims = max(cell2mat(cellfun(@(x)size(x), A, 'uni', 0)'));
%Pad each element of A with zeros so that it's size becomes dims
B = cellfun(@(x)[x,zeros(size(x,1),dims(2)-size(x,2));zeros(dims(1)-size(x,1),dims(2))], A,'uni', 0)

This results in

B = 
 [3x4 double] [3x4 double] [3x4 double]

And more specifically:

>> B{1}
ans =
 0.9028 0.5791 0.0366 0
 0.5763 0.0658 0.3373 0
 0 0 0 0
>> B{2}
ans =
 0.0764 0.1326 0.4413 0
 0.2463 0.0238 0.3726 0
 0.0299 0.2610 0.1408 0
>> B{3}
ans =
 0.6266 0.6141 0.5653 0.5951
 0.3176 0.0741 0.5795 0.2600
 0 0 0 0