cell matching

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Rusmaya Luthfina
Rusmaya Luthfina 2011-10-17
hi,
i have a code like this:
b = {'i'; 'need'; 'five'; 'rats'};
c = {'rats'; 'eat'; 'cheese'};
b{10} = [];
c{10} = [];
how do we match cell c with cell b?? i've tried using ismember but return error 'input must be array of string'
thank you,
---Maya----

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回答（3 个）

Walter Roberson
Walter Roberson 2011-10-17
ismember(c,b)
However that will not work if your version of MATLAB is sufficiently old. Which version are you using?
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Walter Roberson
Walter Roberson 2011-10-18
Good question, I missed that. In that case,
ismember(c(~cellfun(@isempty,c)),b(~cellfun(@isempty,b)))
Jan
Jan 2011-10-18
@Walter: cellfun('isempty') is remarkably faster than cellfun(@isempty).

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Fangjun Jiang
Fangjun Jiang 2011-10-17
Not sure why do you need to have the b{10}=[] and c{10} = [] statement. If it's allowed, you can set those elements to be empty string, and then run ismember().
b = {'i'; 'need'; 'five'; 'rats'};
c = {'rats'; 'eat'; 'cheese'};
b(end+1:10) = {''};
c(end+1:10) = {''};
ismember(b,c)
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Rusmaya Luthfina
Rusmaya Luthfina 2011-10-18
actually, i'm programming document retrieval using vector space model, which between database and query must have same dimension.. :(

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Rusmaya Luthfina
Rusmaya Luthfina 2011-10-18
i've been able to solve my problems.. :D thx u 4 your help!
---Maya--

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