creating a cell array within a cell array using cellfun

Question

If I create a cell array using:

clear all
data = {rand(1,5),rand(1,4),rand(1,4),rand(1,6)};
a = cell(1,length(data));

how is it then possible to create a cell array in each cell of a which is the same length as the corresponding cell in data. I know this can easily be done using a loop, but how would it be possible by using the cellfun function?

Oli · Accepted Answer · 2012-03-30 14:04:02Z

2

Do you want something like that?

data = {rand(1,5),rand(1,4),rand(1,4),rand(1,6)};
a2=cellfun(@(x) cell(size(x)),data,'UniformOutput',0)
a2 = 
    {1x5 cell}    {1x4 cell}    {1x4 cell}    {1x6 cell}

answered Mar 30, 2012 at 14:04

Oli

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gnovice · Accepted Answer · 2012-03-30 14:27:50Z

0

You could also accomplish this by using CELLFUN to just get the sizes of each cell, create all the cells you need, then divide them up using MAT2CELL:

>> cellSizes = cellfun('size',data,2);
>> a = mat2cell(cell(1,sum(cellSizes)),1,cellSizes)

a = 

    {1x5 cell}    {1x4 cell}    {1x4 cell}    {1x6 cell}

answered Mar 30, 2012 at 14:27

gnovice

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