A data frame with 96 pseudo-observations generated by random number generator. All observations come from 3 different centers which have been marked in the last column "species". More specifically, data of species=1 comes from the center (1,1,1,1); data of species=2 comes from the center (2,2,2,0); data of species=3 comes from the center (1,0,2,2).
dimen1the 1st variable
dimen2the 2nd variable
dimen3the 3rd variable
dimen4the 4th variable
speciesclustering label