convert cell array to 3d array

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lucksBi
lucksBi on 14 Apr 2017
Commented: lucksBi on 14 Apr 2017
i have cell array which contains multiple elements like this: a={2x1 cell,2x1 cell,2x1 cell;3x1 cell,3x1 cell,3x1 cell}
and every cell contains elements like for example for first row elements are like this:
a{1,1}{1,1}=2
a{1,1}{2,1}=2
a{1,2}{1,1}=1
a{1,2}{2,1}=1
a{1,3}{1,1}=1
a{1,3}{2,1}=-1
i want to convert this cell array into a 3D array. i have tried cell2mat but it gives following error:
"CELL2MAT does not support cell arrays containing cell arrays or objects"
please help.

Accepted Answer

Stephen23
Stephen23 on 14 Apr 2017
Edited: Stephen23 on 14 Apr 2017
Assuming that all numeric arrays are of a size that can be concatenated together:
>> cell2mat(cellfun(@cell2mat,a,'uni',0))
ans =
2 1 1
2 1 -1
You can then use reshape to arrange the data into a 3D array. Or alternatively, use reshape or permute on the intermediate cell array:
cell2mat(permute(cellfun(@cell2mat,a,'uni',0),[1,3,2]))
As you did not state how you want the dimensions rearranged, it is hard to give more advice than that.
  2 Comments
lucksBi
lucksBi on 14 Apr 2017
Thankyou for your answer. But it gives following error.
Error using cat
Dimensions of matrices being concatenated are not consistent.
lucksBi
lucksBi on 14 Apr 2017
i want answer in this form:
2 1 1
2 1 -1

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