Hi Etienne,
Could you please elaborate on what is meant by "unique values"? This is not clear to me from the explanations on your previous posts. It might help to state your requirements in the reverse way: what kind of duplications involving value should be banned from the container? For instance, the ordered_unique index you show us above bans duplicate elements having the same form (x,*,value), where * indicates that the y member is immaterial here.
Hello Joaquín, I am doing a matrix operation where I need to know the number of unique values per x co-ordinate and number of unique values per y co-ordinate. N-th row, x=N, but how many unique "values" are there in this row? N-th column, y=N, but how many unique "values" are there in the column?
Joaquín M López Muñoz Telefónica, Investigación y Desarrollo _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users