Using loops and strcmp. Have 1 master char array, need to find matches of each entry in 2 other arrays.
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I have 3 variables, each are list-like char arrays.
Var1 is a list of unique 3-letter strings, in alphabetical order.
Var2 and Var 3 are lists where the entries are a random combination of the unique strings in Var1. The unique strings can appear multiple times or not at all. Var 2 and 3 are of equal length, but not Var1.
What I have so far:
num_of_matches1=0;
num_of_matches2=0;
for k=1:length(charstring1)
for i=1:length(charstring2)
MatchChecker=strcmp(charstring1(k),
charstring2(i));
if MatchChecker==1
num_of_matches1=num_of_matches1+1;
end
end
for j=1:length(charstring3)
MatchChecker=strcmp(charstring1(k),
charstring3(j));
if MatchChecker==1
num_of_matches2=num_of_matches2+1;
end
end
Eventually, I need to print results in a table like this:
Charstring Name Matches in Var2 Matches in Var3
ABC 5 8
BAS 8 7
etc.
2 Comments
Accepted Answer
dpb
on 28 Mar 2014
Edited: dpb
on 29 Mar 2014
Oh, that's pretty simple, then...
>> for i=1:size(Var1,1)
disp([sum(ismember(Var2,Var1(i,:),'rows')) ...
sum(ismember(Var3,Var1(i,:),'rows'))])
end
2 4
1 2
4 1
>>
You can go further and replace the loop construct if desired...
ADDENDUM:
Altho in that case entails converting VarN to cellstring arrays owing to addressing a character string by the second address isn't supported in arrayfun syntax.
>> (cellfun(@(x) sum(ismember(cellstr(Var2),x)),cellstr(Var1)))
ans =
2
1
4
>>
2 Comments
dpb
on 30 Mar 2014
Edited: dpb
on 30 Mar 2014
A) What does the result of the note in the ADDENDUM return? :)
B) You can't write a sum of two terms? Gotsa' leave something for the "exercise for the student" :)
C) If you still want to stay with the looping solution, preallocate a results array and populate it with the answers as you iterate thru the Var1 variable.
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