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...ical clustering phase will use a sample of size `k' of the data in the initial hierarchical clustering phase. The default is to use the entire data set. m2 is a matrix (not very large, but the same happens always when specifying k): > dim(m2) [1] 242 2 > em321 <- emclust(m2,k=50) Error in mhtree.VVV(data[smpl, ]) : data must be a matrix with at least 2 columns > em321 <- emclust(m2) (No problems) > em321 <- emclust(m2,modelid="VEV",k=50) Error in mhtree.VVV(data[smpl, ]) : data must be a matrix with at least 2 columns > libr...