Hi Rob, fastbw does not try to produce a full fit object. You have to re-run the fit manually based on what you (sometimes dangerously) learn from fastbw. If I can find a way to add a 'formula' component to the fastbw result then you could do something like lrm(fastbw(fit)$formula, ...).
Frank Rob James wrote: > > There is both a technical and a theoretical element to my question... > Should I be able to use the outputs which arise from the fastbw function > as inputs to nomogram(). I seem to be failing at this, -- I obtain a > subscript out of range error. > > That I can't do this may speak to technical failings, but I suspect it > is because Prof Harrell thinks/knows it injudicious. However, I can't > invent a reason why nomograms should be restricted to the full models, > if the purpose of fastbw is to generate parsimonious models with > appropriate standard errors. > > I'd welcome comments on either the technical or the theoretical issues. > > Many thanks in advance, > > Rob James > > ______________________________________________ > [email protected] 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. > ----- Frank Harrell Department of Biostatistics, Vanderbilt University -- View this message in context: http://r.789695.n4.nabble.com/Nomograms-from-rms-fastbw-output-objects-tp3482669p3483607.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ [email protected] 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.
