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The function "nchoosek" is not working in my code

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I'm currently having a problem. Suppose I've a code as such:
%2 cell arrays named cnt with contents as follow:%
cnt{1}=[3;1;3;2;1;2]
cnt{2}=[2;3;1;3;1;2]
%Finds the index location for values not 1
for i=1:2
ind=find(cnt{i}~=1)
end
%Performs nchoosek for the values corresponding to the indices
for i=1:2
for j=1:size(cnt{i},1)
value{i}=nchoosek(cnt{i}(ind(j)),2)
end
end
The error returned is "??? Error using ==> nchoosek at 50 K must be an integer between 0 and N.
Error in ==> Workshop at 118 value{i}=nchoosek(cnt{i}(ind(j)),2)"
Is there a more direct way besides for loop? [Since it's not efficient and is not returning my desired result]

Answers (1)

ChristianW
ChristianW on 13 Apr 2013
cnt{1}=[3;1;3;2;1;2]
cnt{2}=[2;3;1;3;1;2]
value = cellfun(@(x) nchoosek(x(x~=1),2),cnt,'un',0);
or with loop
for i = 1:length(cnt)
value{i} = nchoosek(cnt{i}(cnt{i}~=1),2);
end

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