A combination of Predict (your newdata), cut2, and the plotting function of your choice ought to suffice. But thought that cross-validation was an option. Not at console at the moment (just off airplane.)
Sent from my iPhone On Aug 15, 2011, at 5:26 PM, array chip <arrayprof...@yahoo.com> wrote: > is there a R function that produces calibration curve on an independetn data > automatically, just like what calibrate() does on the training data itself? > > Thanks > > John > > From: Comcast <dwinsem...@comcast.net> > To: array chip <arrayprof...@yahoo.com> > Cc: "r-help@r-project.org" <r-help@r-project.org> > Sent: Monday, August 15, 2011 2:04 PM > Subject: Re: [R] calibration curve for cph() > > Build a prediction function using 'Function' that gets applied to set2. > Calibrate and validate. > > -- > David > > Sent from my iPhone > > On Aug 15, 2011, at 11:31 AM, array chip <arrayprof...@yahoo.com> wrote: > > > Hi, the calibrate.cph() function in rms package generate calibration curve > > for Cox model on the same dataset where the model was derived using > > bootstrapping or cross-validation. If I have the model built on dataset 1, > > and now I want to produce a calibration curve for this model on an > > independent dataset 2, how can I do that? > > > > Thanks > > > > John > > > > [[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. > > [[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.
