search for: binarytree

> ---------- Forwarded message ---------- > Date: Wed, 5 Oct 2011 21:09:41 +0000 > From: Chris <christopher.a.hane at gmail.com> > To: r-help at stat.math.ethz.ch > Subject: Re: [R] Party extract BinaryTree from cforest? > > I found an internal workaround to this to support printing and plot type > simple, > > tt<-party:::prettytree(cf at ensemble[[1]], names(cf at data at > get("input"))) >> npt <- new("BinaryTree") >> npt at tree<-tt >&...

Hi there, I need to extract the variable names from all nodes (except the terminal nodes) from a ctree object, e.g. library(party) mammoct <- ctree(ME ~ ., data = mammoexp) plot(mammoct) how can I extract the varnames from node 1 (SYMPT) and node 3 (PB) from the fitted object "mammoct"? Many Thanks, Sven

I am trying to extract the tree information from the output of ctree. I tried using the documentation from BinaryTree Class {party} but with no success. Any help is appreciated. Thank You -- *David Guy, PhD Flemington, NJ 917-941-5890 Cell 908-237-5107 Home 908-284-0356 Fax* [[alternative HTML version deleted]]

After ctree builds a tree, how would I determine the direction missing values follow by examining the BinaryTree-class object? For instance in the example below Bare.nuclei has 16 missing values and is used for the first split, but the missing values are not listed in either set of factors. (I have the same question for missing values among numeric [non-factor] values, but I assume the answer is similar.)...

...1] sctest.Fstats sctest.efp sctest.formula sctest.gefp sctest.mob* Non-visible functions are asterisked R> R> assign(".oldSearch", search(), env = .CheckExEnv) R> assign(".oldNS", loadedNamespaces(), env = .CheckExEnv) R> cleanEx(); ..nameEx <- "BinaryTree-class" R> R> methods(sctest) [1] sctest.Fstats sctest.efp sctest.formula sctest.gefp R> R> R> proc.time() [1] 1.77 0.01 1.97 0.00 0.00 R>

Hallo list, I'm wondering if there is a way to extract the path to terminal nodes in a BinaryTree object, e.g. ctree, like the function path.rpart in package rpart. Thanks, Sven

I'm trying to understand how to set graphical parameters for trees created with the party package.  For example take the following code:   library(party)     data(airquality)     airq <- subset(airquality, !is.na(Ozone))     airct <- ctree(Ozone ~ ., data = airq,                    controls = ctree_control(maxsurrogate = 3))     plot(airct)   My problem is, I've got a ctree that has

Hi, I am new to R and am using the ctree() function to do customer segmentation. I am using the following code to generate the tree: treedata$Response<-factor(treedata$Conversion) fit<-ctree(Response ~ .,controls=ctree_control(mincriterion=0.99,maxdepth=4),data=treedata) plot(fit) print(fit) The variable "Response" above equals 1 if the customer responded to an offering and

Hi, I'd like to plot a tree with images of molecular structures instead of labels (words). I think this is possible because someone who worked in my office before I arrived did this. However I'm not sure if this person made the image manually or plotted it only with R. Thanks in advance for your help. -- View this message in context:

Hi all, How to store recursive resutls from a function for each step without using global operators <<-? Thanks ahead. Xiaohui Chen Dept. of Statistics UBC, Canada _________________________________________________________________ Don?t waste time standing in line?try shopping online. Visit Sympatico / MSN

...n(data)trafo(data, surv_trafo=logrank_trafo(data, ties.method = "logrank")) ) which works well but as I am not a statistician it is quite confusing and i might not run it properly. My technical problem is that I would like to extract the statistics output from my "test" object (BinaryTree class), i.e. P-value of each of the 200 comparisons (survival data versus each gene): i would like to know which of them can be really correlated to each node of the tree. I tried: test at tree$criterion$statistic but the maximum value of this is 16, so I assume it is not a p-value as such: what i...