Hi , dear R experts . I use the package mclust to do some cluster analysis . doing the example that the document provides > faithfulModel <- Mclust( faithful ) > plot( faithfulModel ) I remember in R 2.7.0 I can get several figures using the plot command, but after I update R, using the same statements, after I get the first figure and I press enter as R tells and I get "Warning message:In plot.Mclust(faithfulMclust) : data not supplied". I tried other data set , the warning message still exists . what does it mean? how can i do to avoid it ? is there any resource that I can find solution to specific warning like some IDE(like Xcodes in mac or Eclipse , etc.) does??? thanks in advance. best regards. ----------------------------------------------- Peng Jiang ?? ,Ph.D. Candidate Antai College of Economics & Management ???????? Department of Mathematics ??? Shanghai Jiaotong University (Minhang Campus) 800 Dongchuan Road 200240 Shanghai P. R. China