How to obtain the filtered Index of Cell Array

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Kushan
Kushan 2013-5-6
% This is the code
AllNames= {'A.1';'A.1';'A.10';'A.10';'A.10';'A.10';'A.15';'A.15';'A.16' ;'A.17';'A.17';'A.17';'A.17';'A.17';'A.20A';'A.20A';'A.20A';'A.20A'};
B=[2;6;3;4;5;1;8;6;4;3;2;8;6;1;6;8;9;2];
ide_names=unique(AllNames(1:end,1)) ;
for i= 1:length(ide_names)
index=find(AllNames(:,1)==ide_names(i,1));
data.Name(1,i)=ide_names(i,1);
data.Value=B(index,1);
end
% I want to create a new data struct(data) using the filtered Index from Cell Array A with values contain in B column vector. However, Once I ran the code below error is poping up.
_Undefined function 'eq' for input arguments of type 'cell'.
Error in a (line 6) index=find(AllNames(:,1)==ide_names(i,1));_
% could someone help me out, please
  1 个评论
Jan
Jan 2013-5-6
I have formatted your code. It is easy: mark it with the mouse, hit the "{} Code" button, care for a blank line before and after the code.

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回答（3 个）

Andrei Bobrov
Andrei Bobrov 2013-5-6
编辑：Andrei Bobrov 2013-5-6
AllNames= {'A.1';'A.1';'A.10';'A.10';'A.10';'A.10';'A.15';'A.15';'A.16' ;'A.17';'A.17';'A.17';'A.17';'A.17';'A.20A' ;'A.20A';'A.20A';'A.20A'};
B=[2;6;3;4;5;1;8;6;4;3;2;8;6;1;6;8;9;2];
[a,c,c] = unique(AllNames); %[EDIT}
bb = accumarray(c,B,[],@(x){x});
data = struct('Name',a,'Value',bb);
Kushan
Kushan 2013-5-6
Thanks a lot for your quick response. But below line is not working
[a,~,c] = unique(AllNames,'stable');
The below error massage is popping up
[a,~,c] = unique(AllNames,'stable');
Error using cell/unique (line 28)
Unrecognized option.
Please help me out
Jan
Jan 2013-5-6
You can change the line:
index=find(AllNames(:,1)==ide_names(i,1)); % ERROR
to
index = strcmp(AllNames(:,1), ide_names{i,1});
But using the outputs of unique is faster.

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