Anjali Karve wrote: > Hello, > > I have a classification tree. I want to obtain a ROC curve for this test. > What is the easiest way to obtain one? > > -Anjali
ROC curves have a number of problems, chief among them leading to the temptation of dichotomizing test results. ROC areas are useful statistics though. In the Hmisc package see somers2 and rcorr.cens for getting the ROC area nonparametrically. Frank -- Frank E Harrell Jr Professor and Chair School of Medicine Department of Biostatistics Vanderbilt University ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html