ismember() returning without unique indexing

I want to get a result from ismember function such that

a =[{'aa'};{'bb'};{'cc'};{'dd'};{'ee'}];

b = [{'bb'};{'bb'};{'dd'};{'dd'};{'dd'};{'dd'}];

idx = find(ismember(a,b) == 1);

then idx = [2 4];

however, I want to get the results like idx = [2 2 4 4 4 4];

so, the frequency of cell array in b is conserved.

Would please somebody help me?

Thanks.

justin

Answer 1

[Oleg Komarov]

[tf,loc] = ismember(b,a);
 loc.' =
   2     2     4     4     4     4

[Jan]

@JC: You find this behaviour explained in the help text. It is worth to read.