Dear everybody,
I'm a new user of R 2.4.1 and I'm searching for information on improving the output of regression tree graphs. In the terminal nodes I am up to now able to indicate the number of values (n) and the mean of all values in this terminal node by the command > text(tree, use.n=T, xpd=T) Yet I would like to indicate automatically in the output graph of the tree some quality measure, e.g. impurity (or standard deviation .....) and a character to identify which cases are in one terminal node, e.g. given a ID number or name. Until now I did not discover in my R help scripts or in the R programm help how to do it. So I calculate impurity by hand, and I'm identifying the cases in each node "by hand", and I am adding these values with a graphical software to the graph (as e.g. given "*.jpg" file). Therefore anybody can see that I added these values by hand. I'm quite sure that there is a more easy and faster way which looks (and is!) more professional. Could anybody help me? That would be great! Thank you very much for your support! Dr. Jürgen Kühn Leibniz-Centre for Agricultural Landscape Research (ZALF) Institute of Soil Landscape Research_ <http://www.zalf.de/home_zalf/institute/blf/blf_e/index.html>_ Eberswalder Str. 84 D-15374 Müncheberg Tel.: ++49/(0)33432/82-123 Fax: ++49/(0)33432/82-280 E-mail: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> Internet: http://www.zalf.de/home_zalf/institute/blf/blf/ ______________________________________________ R-help@stat.math.ethz.ch 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.
