Hi, I made a mistake, effectively Pascal your method given to the first message is correct. I didn't use the good data, so it's sure that it could not work !
But, I have an another question : Can I obtain a same graph except that the y-axis represents the likelihood ratio ? All the best, Camille ----- -- Camille Leclerc, Master student Lab ESE, UMR CNRS 8079 Univ Paris-Sud Bat 362 F-91405 Orsay Cedex FRANCE -- View this message in context: http://r.789695.n4.nabble.com/ROC-Analysis-tp4469203p4475038.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.