Hi, Thanks Sarah. Unfortunately I did not get a step further.
My question, perhaps a bit clearer, is how to display the case control status (or any other arbitrary point label) after clustering in a plot: With a bit of pseudo code, where dataset is a data.frame, parameters are those column names where we find numerical values (no NAs) and nclasses is the desired number of classes. fit <- kmeans(dataset[, parameters], nclasses) plot(dataset[, parameters], col = fit$cluster, dimen = nclasses) This gives us a nicely coloured plot where all points are circled. Yet, my desire is to see the case / control-Status encoded in a column "Status" with single characters, in place of those circled points. Any hints? I did not get pch() nor text() to work. Perhaps the solution lies there, but them I am sure that I do not see the wood for all those trees ... TIA Christian [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.