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From: Adam Andersen Læssøe on 8 Feb 2010 17:10
I have a cell array in a structure sys.T :
sys=
T: {1x8 cell}
Each cell contains a one dimensional array, e.g.:
sys.T{1}
ans =
1 3 13 8 7 2

I want to find the cells containing for instance 3.
Based on my searching results I try:
>> find(cellfun(@(x) x==3,sys.T))
??? Error using ==> cellfun
Non-scalar in Uniform output, at index 1, output 1.
Set 'UniformOutput' to false.

And therefore :
>> find(cellfun(@(x) x==3,sys.T,'UniformOutput',false))
??? Undefined function or method 'find' for input arguments of type 'cell'.

What am I doing wrong?
From: Nathan on 8 Feb 2010 17:19
On Feb 8, 2:10 pm, "Adam Andersen Læssøe" <aala...(a)gmail.com> wrote:
> I have a cell array in a structure sys.T :
> sys=
> T: {1x8 cell}
> Each cell contains a one dimensional array, e.g.:
> sys.T{1}
> ans =
>      1     3    13     8     7     2
>
> I want to find the cells containing for instance 3.
> Based on my searching results I try:>> find(cellfun(@(x) x==3,sys.T))
>
> ??? Error using ==> cellfun
> Non-scalar in Uniform output, at index 1, output 1.
> Set 'UniformOutput' to false.
>
> And therefore :>> find(cellfun(@(x) x==3,sys.T,'UniformOutput',false))
>
> ??? Undefined function or method 'find' for input arguments of type 'cell'.
>
> What am I doing wrong?

As it says, find doesn't work with cell types. You'll need another
cellfun (if you want to do it this way)...
Here's one approach:
T{1} = 1:5;
T{2} = 1:2:10;
T{3} = 1:3:30;
T{4} = 20:-2:6;
tf = ~cellfun('isempty',cellfun(@(y)find(y),cellfun(@(x)
x==3,T,'UniformOutput',false)','uni',false));
%tf contains a 1 for each array in T that contains a 3
%%%%%%%%%%%%%%%%%%%%%%%%%%%
tf =
1
1
0
0
T{tf}
ans =
1 2 3 4 5
ans =
1 3 5 7 9


-Nathan
From: Adam Andersen Læssøe on 9 Feb 2010 01:57
> As it says, find doesn't work with cell types. You'll need another
> cellfun (if you want to do it this way)...
> Here's one approach:
> T{1} = 1:5;
> T{2} = 1:2:10;
> T{3} = 1:3:30;
> T{4} = 20:-2:6;
> tf = ~cellfun('isempty',cellfun(@(y)find(y),cellfun(@(x)
> x==3,T,'UniformOutput',false)','uni',false));
> %tf contains a 1 for each array in T that contains a 3
> %%%%%%%%%%%%%%%%%%%%%%%%%%%
> tf =
> 1
> 1
> 0
> 0
> T{tf}
> ans =
> 1 2 3 4 5
> ans =
> 1 3 5 7 9
>
>
> -Nathan
Thanks.
Well, I don't necessarily want to do it that way. I'd be happy to see a simpler approach.

/Adam
From: us on 9 Feb 2010 03:02
"Adam Andersen Læssøe" <aalasso(a)gmail.com> wrote in message <hkq24c$e26$1(a)fred.mathworks.com>...
> I have a cell array in a structure sys.T :
> sys=
> T: {1x8 cell}
> Each cell contains a one dimensional array, e.g.:
> sys.T{1}
> ans =
> 1 3 13 8 7 2
>
> I want to find the cells containing for instance 3.
> Based on my searching results I try:
> >> find(cellfun(@(x) x==3,sys.T))
> ??? Error using ==> cellfun
> Non-scalar in Uniform output, at index 1, output 1.
> Set 'UniformOutput' to false.
>
> And therefore :
> >> find(cellfun(@(x) x==3,sys.T,'UniformOutput',false))
> ??? Undefined function or method 'find' for input arguments of type 'cell'.
>
> What am I doing wrong?

one of the solutions

clear c; % <- save old stuff(!)...
c{1,1}=1:4;
c{2,1}=[];
c{3,1}=5:7;
c{4,1}=-1:3;
tf=cellfun(@(x) any(x==3),c).'
% tf = 1 0 0 1

us
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