Dear Josh, On Mon, Oct 11, 2010 at 3:15 PM, Joshua Wiley <jwiley.ps...@gmail.com> wrote: > Hi All, > > Does anyone know of a function to plot a regression surface for two > predictors? RSiteSearch()s and findFn()s have not turned up what I > was looking for. I was thinking something along the lines of: > http://mallit.fr.umn.edu/fr5218/reg_refresh/images/fig9.gif > > I like the rgl package because showing it from different angles is > nice for demonstrations. I started to write my own, but it has some > issues (non functioning code start below), and I figured before I > tried to work out the kinks, I would ask for the list's feedback. > > Any comments or suggestions (about functions or preferred idioms for > what I tried below, or...) are greatly appreciated. > > Josh >
[snip] I haven't tried to debug your code, but wanted to mention that the Rcmdr:::scatter3d function does 3-d scatterplots (with the rgl package) and adds a regression surface, one of 4 or 5 different types. If nothing else, it might be a good place to start for making your own. A person can play around with the different types in the Rcmdr under the Graphs menu. Or, from the command line: library(Rcmdr) with(rock, scatter3d(area, peri, shape)) I hope that this helps, Jay ______________________________________________ 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.
