Hi, Use packages "rpart.plot" or "maptree" to enhance the tree drawing. Or another alternative, use "party" package that offers much more graphing possibilities.
Regards, Carlos Ortega www.qualityexcellence.es On Thu, Sep 8, 2011 at 5:27 PM, Brian Jensvold <brnjns...@gmail.com> wrote: > I am trying to create a classification tree using either tree or rpart > functions but when it comes to plotting the results the formatting I get is > different than what I see in all the tutorials (like > http://www.youtube.com/watch?v=9XNhqO1bu0A or > http://www.youtube.com/watch?v=m3mLNpeke0I&feature=related or > http://www.statmethods.net/advstats/cart.html "tree for kyphosis"). I am > trying to take a large demographic population and create a tree which > systematically and accurately divides them into 2 pre-defined > classifications using multiple predictor variables. What I would like to > see is what I have seen in the tutorials similar to to the ones provided > above, where it shows something like "12/2" in each leaf or stem or step of > the tree which is meant to be interpreded as "at this step/stage there are > 12 people of this category and 2 of the other. Instead I am presently > getting something like .342524 which I guess could be the result of > divideing the two groups inorder to find some porportion but im not sure, > and would that be 34% group a or group b? I was also wondering how you > know > which side is the side of each test where the individual passes or fails? > Is yes/pass always on the left? > > I'm pretty sure this is just a mater of changing some sort of default > settings and is in no way a critique of the fine work the designers of R > have freely provided us. > > > Thank you > > [[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.
