Displaying 20 results from an estimated 8000 matches similar to: "tree and rpart"
2010 Mar 05
1
I can't find "rpart" help (linux)
Hi
I have installed rpart in my Linux (PLD) but I don't know how I may find
help conect this package?
Here is my instalaction:
> install.packages("rpart",dependencies=TRUE)
--- Please select a CRAN mirror for use in this session ---
trying URL 'http://r.meteo.uni.wroc.pl/src/contrib/rpart_3.1-46.tar.gz'
Content type 'application/x-gzip' length 136572 bytes (133
2003 Aug 15
3
How to reinstall rpart?
After entering ?library(rpart)?, I tried to plot an existing rpart tree, and
got this error message: Error: couldn't find function "plot.rpart".
However, ??plot.rpart? does bring up the help for the function. The same
things occur for text.rpart, although print(my.tree) does work.
So, I tried to re-install rpart using Packages | Install from CRAN, but
then I get this
2012 Mar 05
1
decision/classification trees with fewer than 20 objects
Hi!
I'm trying to construct and plot a decision tree to class a set of only 8 objects and tried to use the rpart and tree function, but get a error message both times:
rpart: fit is not a tree, just a root
tree: cannot plot singlenode tree
I read in the post 'question regression trees' that rpart doesn't split a set of fewer than 20 objects...so I guess the same holds true for
2012 May 15
1
caret: Error when using rpart and CV != LOOCV
Hy,
I got the following problem when trying to build a rpart model and using
everything but LOOCV. Originally, I wanted to used k-fold partitioning,
but every partitioning except LOOCV throws the following warning:
----
Warning message: In nominalTrainWorkflow(dat = trainData, info =
trainInfo, method = method, : There were missing values in resampled
performance measures.
-----
Below are some
1998 Jun 24
0
R-beta: Packages: KernSmooth logspline ppr rpart tree
The following are now on CRAN:
KernSmooth: version 2.2 of the code for Wand & Jones book on kernel smoothing.
logspline: spline fits to log denisites, with automatic choice of smoothing.
ppr: projection pursuit regression.
rpart: recursive partitioning (CART-like)
VR: Venables & Ripley libraries 5.3pl021 for 0.62.1
and in the devel section
tree: a clone
1998 Jun 24
0
R-beta: Packages: KernSmooth logspline ppr rpart tree
The following are now on CRAN:
KernSmooth: version 2.2 of the code for Wand & Jones book on kernel smoothing.
logspline: spline fits to log denisites, with automatic choice of smoothing.
ppr: projection pursuit regression.
rpart: recursive partitioning (CART-like)
VR: Venables & Ripley libraries 5.3pl021 for 0.62.1
and in the devel section
tree: a clone
2007 Jan 03
1
User defined split function in Rpart
Dear all,
I'm trying to manage with user defined split function in rpart
(file rpart\tests\usersplits.R in
http://cran.r-project.org/src/contrib/rpart_3.1-34.tar.gz - see bottom of
the email).
Suppose to have the following data.frame (note that x's values are already
sorted)
> D
y x
1 7 0.428
2 3 0.876
3 1 1.467
4 6 1.492
5 3 1.703
6 4 2.406
7 8 2.628
8 6 2.879
9 5 3.025
10 3 3.494
2001 Jul 06
1
installing tree pkg on linux
I am having trouble installing the tree package on linux.
I followed all the steps in section 5.2 of the FAQ
http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html#How%20can%20add-on%20packages%20be%20installed%3f
In particular, I typed 'R CMD INSTALL -l /home/cs/murphyk/R
tree_1.0-2.tar.gz'. This created the files 'LibIndex', 'R.css' and a
subdirectory called 'tree'.
2012 Jan 10
0
rpart vs. tree and deviance calculations
Hi Everyone,
I'm working on building some classification trees, and up to this point
I've been using rpart. However, I recently discovered the tree package,
and found that it had some useful functions (in particular deviance(),
which I would really like to use for my project). I can't seem to find
an equivalent function for rpart. I've considered using tree() in place
of
2003 Aug 15
0
partition.tree() version for rpart ?
The "tree" package has a nice function partition.tree() for
drawing the (1D or) 2D partition in the case of only (one or)
two predictors {See the examples in help(partition.tree)}.
{and so does S-plus (not in a separate package though)}.
It seems to me that there's no function with similar functionality
available for rpart. Am I mistaken? Has anyone worked on this?
One possible
2008 Oct 27
0
Displaying number of Y/N affected by tree in rule form RE: R question/request on rules from rpart
Hi Prof. Williams,
thanks for your suggestion. The updated code is below.
It turns out it was a matter of displaying the second column in
yval to get the number of N and subtracting it from the n column in the
frame to get the number of Y remaining in a binary example.
once this is added now the function returns the rules along with
Y and N count affected by the resulting rule.
I am ccing
2011 Jan 11
0
Some questions concerning survival tree analysis using the rpart module
All the documentation that I have on survival splitting is found in the
technical report you mention. However, there is both a short form and a
long form of this on our web site, did you get the larger one (52
pages)? I admit it is not a lot.
There are no other split algorithms implimented for survival data. It
would be possible to add your own. Attached is a slightly updated
version of the
2012 May 16
1
TukeyHSD plot error
Hi, I am seeking help with an error when running the example from R
Documentation for TukeyHSD. The error occurs with any example I run, from
any text book or website. thank you...
> plot(TukeyHSD(fm1, "tension")).
Error in plot(confint(as.glht(x)), ylim = c(0.5, n.contrasts + 0.5), ...) :
error in evaluating the argument 'x' in selecting a method for function
2011 Nov 04
1
Decision tree model using rpart ( classification
Hi Experts,
I am new to R, using decision tree model for getting segmentation rules.
A) Using behavioural data (attributes defining customer behaviour, ( example
balances, number of accounts etc.)
1. Clustering: Cluster behavioural data to suitable number of clusters
2. Decision Tree: Using rpart classification tree for generating rules for
segmentation using cluster number(cluster id) as target
2011 Apr 08
4
Rpart decision tree
Dear useRs:
I try to plot an rpart object but cannot get a nice tree structure plot. I
am using plot.rpart and text.rpart (please see below) but the branches that
connect the nodes overlap the text in the ellipses and rectangles. Is there
a way to get a clean nice tree plot (as in the Rpart Mayo report)? I work
under Windows and use R2.11.1 with rpart version 3.1-46.
Thank you.
Tudor
...
2009 May 12
1
questions on rpart (tree changes when rearrange the order of covariates?!)
Greetings,
I am using rpart for classification with "class" method. The test data is
the Indian diabetes data from package mlbench.
I fitted a classification tree firstly using the original data, and then
exchanged the order of Body mass and Plasma glucose which are the
strongest/important variables in the growing phase. The second tree is a
little different from the first one. The
2008 Jan 29
2
rpart error when constructing a classification tree
I am trying to make a decision tree using rpart. The function runs very
quickly considering the size of the data (1742, 163). When I call the
summary command I get this:
> summary(bookings.cart)
Call:
rpart(formula = totalRev ~ ., data = bookings, method = "class")
n=1741 (1 observation deleted due to missingness)
CP nsplit rel error
1 0 0 1
Error in yval[, 1] :
2010 Aug 31
0
rpart - interpretation of results of tree on survival data
Hi All,
I am fitting a tree to censored survival data using the rpart package and
wanted to better understand the results.
I am trying to interpret the output from the tree. I am interested in
understanding what "yval" is for a survival tree. I see in the output of
summary, the phrase "estimated rate". The estimated rate is 1 for the entire
tree, and more of less for each
2004 Jun 11
1
Error when I try to build / plot a tree using rpart()
Hi,
I am using the rpart package to build a classification tree. I did
manage to build a tree with data on a previous project. However, when
attampting to build a tree on a project I am working on, I seem to be
getting the error shown below:
> nhg3.rp <- rpart(profitresp ~., nhg3, method="class")
> plot(nhg3.rp, branch=0.4, uniform=T); text(nhg3.rp, digits=3)
Error in
2009 Dec 14
1
RPART - printing full splitting rule number on tree plot
Dear R-users
I am using RPART package to get regression trees. However having trouble getting the text function to put the full splitting rule number on the plot, instead to puts it in scientific notation. When a covariate has 1e4 or greater number of digits then the splitting rule number displayed on the plot is in scientific notation. But print.rpart displays the splitting rules in full.