ismember for string matrix

I have two string matrices;
A=['c1' 'c ' 'b ' 'd9']'; %UNIQUELIST
B=['d9' 'c1']'; %ORIGINALLIST
I would like do find member of B in A, using:
[LIA,LOCB]=ismember(A,B);
and it returns
LOCB =
3
4
3
0
0
0
1
2
But I actually would like it to return matching row index like this:
LOCB =
2
0
0
1
Thanks for your help
Sam

Risposte (2)

Sean de Wolski
Sean de Wolski il 26 Nov 2014
You need to make A and B cell arrays so that each string piece is a separate element (rather than a 1xn string. The fix is simple use {} instead of []
A={'c1' 'c ' 'b ' 'd9'}';
B={'d9' 'c1'}'
[LIA,LOCB]=ismember(A,B)
dpb
dpb il 26 Nov 2014
You've got string arrays here; use the 'rows' optional argument to treat them as such instead of as individual characters...
>> [~,loc]=ismember(A,B,'rows')
loc =
2
0
0
1
>>

3 Commenti

i guessed if i use
[~,loc]=ismember(cellstr(A),cellstr(B))
then it would safely do the same job?
dpb
dpb il 26 Nov 2014
Did you try it and see???
Sean de Wolski
Sean de Wolski il 26 Nov 2014
Probably, but converting to cells is heavier weight if you don't need them for other things.

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Richiesto:

Sam
il 26 Nov 2014

Commentato:

il 26 Nov 2014

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