How to Access the Cell array Matrix?

Question

Could any one tell me about the indexing of a cell Array? I've tried to google it but I could only find unsatisfied result (may be I'm not good in googling). For matrix indexing I found a good document which can be found here. For my case let take a simple example.

a = {ones(10)}

and I want to access the first element of a. Something like

a(1,1) % this will give a 10 x 10 matrix but i am not looking for it.

I can do it by changing it into a matrix like

a = cell2mat(a);
a(1,1)
ans = 1

but is there any direct way to access first element of cell array sub matrix.

When nothing else works, read the manual/help: http://www.mathworks.com/help/matlab/matlab_prog/access-data-in-a-cell-array.html (don't forget to also check out "For more information" section) — , Oct 10 '14 at 08:50
Dear @Oleg Komarov Thanks for reply. i read it but i could not find what acctually i was looking for........... — user2851655, Oct 10 '14 at 08:58
@user2851655 see the end of the answer in the duplicate question. You just call `()` after `{}` as in `a{1}(1)` — Dan, Oct 10 '14 at 09:00

score 3 · Accepted Answer · answered Oct 10 '14 at 08:58

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To access the first element of a the first cell in a cell array, you may do:

a = {ones(10)};
a{1}(1)

If you have multidimensional cell arrays, with multidimensional numerical arrays inside it, you can do:

a{2,3}(4,5)

This will give you element (4,5) of cell (2,3).

answered Oct 10 '14 at 08:58

Stewie Griffin

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Thanks a lot i was actually looking for this kind of answer. Thank you ........... – user2851655 Oct 10 '14 at 09:04

score 2 · Answer 2 · edited May 23 '17 at 11:57

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You actually are accessing the first element of a, and it contains a matrix of 10×10 filled with ones.

Initializing a cell can be done by a = cell(10), and obtaining a certain value of the cell matrix is done with a{i,j}. See also the documentation.

For initializing a cell array with some values, see this question.

edited May 23 '17 at 11:57

Community

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answered Oct 10 '14 at 08:50

MeMyselfAndI

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In order to access elements of elements of a cell array, single-level indexing is not enough. `a{1,1}(1,1)` is rather the answer. – Oct 10 '14 at 08:57
That is just how you interpret the question. Accessing the first value in the array that is in the first element of a cell is done like that. Anyway, you do have a point. – MeMyselfAndI Oct 10 '14 at 08:59
@Jan de Gier. Thanks a lot Dear and i really appriciate for your help. but i was looking for somthing like **Robert** ans.... THANKSSSSSSSSSSSSSSSSSSSSSSS – user2851655 Oct 10 '14 at 09:01

How to Access the Cell array Matrix?

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