On Feb 20, 2013, at 2:42 PM, Melanie Zoelck wrote: > Dear R Help Members, > > I am aware how to plot the LD1 vs LD2 from a lda in R, using the code: > > plot(baseline.systat.hat$x, > col=baseline.systat.hat$class,pch=as.numeric(baseline.systat.hat$class)) > > However, I need to use the quadratic discriminant function, qda due to data > properties. Is there a way to obtain the same sort of plot for from a qda > object (and the output of predict qda). I have not been able to find this and > am a bit stumped. I cannot seem to find any information on plotting this. >
Code for plotting qda results appears on p340 of MASSe4. However the comment that "Function predplot is given in the scripts" is not something I was able turn into anything useful after looking in hte index, searching the MASS website. Searching with Google for 'ripley MASS predplot' I find an R help posting by Gavin Simpson in 2003 that pointed to the file ch11.R in the MASS library, but I find that in the meantime it has moved to ch12.R in the "scripts" directory of ../library/MASS/ -- David Winsemius Alameda, CA, USA ______________________________________________ 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.
