Hello, R-experts, I have a data set of 4071 rows with 20 columns, each row is some specific subject that I am interested in, and each column is a set of conditions that I need to do the test on the subject. Suppose in two of my columns I have one condition with Ca, and another condition without Ca. Now, I would like to do a plot with X-axis being the one with Ca, and Y-axis being the one without Ca. Inside this graph, I would like to see a group of my subject for Ca dependent, and another group for Ca independent, and another group with no Ca effect, and another group with mutual effect. I assume that I need to use some sort of clustering, or rpart, but I looked at the documentation, but, I do not find anything similar. Can anyone instruct me on how I can achive this? Thank you in advance for your kindness help. Pauline -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._