Hi Josiane, Concerning ROC curves, the package ROCR should do what you want to do. Use install.packages to add it to you library.
Getting you data into a text file format, use read.delim to read into an data frame. Once you have a data frame, you can use the methods in ROCR to analyze the data. Best, Corey On Mon, Jan 30, 2012 at 1:52 AM, Josiane NJIWA <joa...@yahoo.com> wrote: > > > Hello all, > > I am very new to R and i am facing two problems. First i didn't succeed > changing the konsole language in english even after trying the line command > set language='en'. > I would like to plot ROC curves. I have a serie of 10 threshold tests that > i do for 10 patients. The prediction for the patients is always the same > but the status can change given to the considered threshold. > I have 11 columns of 10 rows, the first colums containing the10 lines of > the predicted status of the patients (0=cured, 1=non cured). Then follow 10 > columns (10 thresholds) containing the found status using the threshold. > Please do someone know how i can use those values with R to plot ROC > curves? > > I thank you for your understanding, > > Josiane. > > > "Everything should be made as simple as possible, but not simpler." > Albert Einstein. > [[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. > -- *The mark of a successful man is one that has spent an entire day on the bank of a river without feeling guilty about it.* [[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.
