Displaying 20 results from an estimated 5000 matches similar to: "rpart 3.1.0 bug?"
2001 Sep 13
3
OT: ps -> eps -> MS Word
I've created a bunch of postscript trees (post.rpart), which I subsequently
edit in Adobe Acrobat 4.05 (I need additional labelling that isn't easy to
add with R). After editing the labels and annotations using Acrobat, I
then export the file to Adobe's .eps format so I can insert the picture
into a Microsoft Word 2000 document. The .pdf file distilled from the .ps
file is
2001 Nov 16
2
Finite Mixture Analysis
Are there any S-Plus or R libraries/packages that do Finite Mixture
Analysis following the algorithms similar to those implemented in Geoffrey
MacLachlan's EMMIX program?
Thanks.
Dr. Marc R. Feldesman
email: feldesmanm at pdx.edu
email: feldesman at attglobal.net
fax: 503-725-3905
"Don't know where I'm going.
Don't like where I've been.
There may be no exit.
But
2001 Aug 03
2
Math symbols in email - not completely OT
What is the generally accepted way to put certain math symbols into plain
text email?
For example, how does one convey the "is exactly equal to", "is
approximately equal to", and "delta" symbols in a standard text-based (e.g.
Courier) font?
Dr. Marc R. Feldesman
email: feldesmanm at pdx.edu
email: feldesman at attglobal.net
fax: 503-725-3905
2001 Dec 26
1
ESS 5.1.19 w/Xemacs 21.4.6
Probably wrong group for this, but a quick question. I've just switched
from emacs to Xemacs. In reinstalling ESS 5.1.19 I keep getting the
following error when loading Xemacs:
"Error in init file: Symbol's function definition is void: w32-using-nt"
I've debugged the ess-site.el file, which is where the error originates
from. The line causing the difficulty is:
2009 Jun 09
3
rpart - the xval argument in rpart.control and in xpred.rpart
Dear R users,
I'm working with the rpart package and want to evaluate the performance of
user defined split functions.
I have some problems in understanding the meaning of the xval argument in
the two functions rpart.control and xpred.rpart. In the former it is defined
as the number of cross-validations while in the latter it is defined as the
number of cross-validation groups. If I am
2002 Nov 11
2
Bootstrp help
Hey,
I have a set of data and want to use Bootstrap
method to estimate some pararameters.
So does anybody know if there are such
functions in R to achieve this?
Thanks for your points.
Fred
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2001 Dec 07
2
Help for Linear Discriminant Analysis
Dear colleague,
I'd like to compute linear discriminant analysis, using R. In the book Modern applied statistic with Splus (Venables & Ripley, p. 396), lda function is used. Could you tell me where I can find this function? At what site, can I download this library ?
Thank for your help.
Best Regards
Sovan
----------------------------------------------------------------
Prof. Sovan
2001 Feb 01
3
summary() vs mean()
Forgive what may seem to be a trivial question/problem.
Below is some simple R 1.2.1(Windows) code with output.
> summary(mammals, digits=10)
Name Body.Weight Brain.Weight
Red Fox :1 Min. : 3.0 Min. : 26.0
Pig :1 1st Qu.: 35.5 1st Qu.: 138.5
Man :1 Median : 100.0 Median : 406.0
Kangaroo:1 Mean : 761.2 Mean :1000.0
Jaguar :1 3rd
2000 Sep 04
2
how to compile R source code under Win NT?
Dear All,
This is an absolutely beginner's question: which compiler should I use to
compile R source code under Win NT platform?
Thanks a lot.
Shige Song
Department of Sociology, UCLA
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r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or
2002 Mar 20
4
A Very Trivial Question
Hi,
This is a very trivial question, and I do not know why I cannot remember
the answer at all!
How does one get the entire system information (which OS, R
version....etc) using an R command?
Thanks,
Kevin
------------------------------------------------------------------------------
Ko-Kang Kevin Wang
Postgraduate PGDipSci Student
Department of Statistics
University of Auckland
New Zealand
2007 Feb 26
2
survival analysis using rpart
Hello,
I use rpart to predict survival time and have a problem in interpreting the
output of ?estimated rate?. Here is an example of what I do:
> stagec <-
> read.table("http://www.stanford.edu/class/stats202/DATA/stagec.data",
> col.names=c("pgtime", "pgstat", "age","eet", "g2", "grade", "gleason",
>
2001 Jul 12
2
rpart puzzle
I've been using the package rpart with R 1.3.0 for Windows to produce
simple classification trees for some measurement data from paleontological
specimens. Both the rpart documentation and the output confirm that the
program produces splits on continuous data that leave "holes" in the
data. It is probably of little practical importance, but is there a reason
why the binary
2011 Mar 19
2
cross-validation in rpart
I am trying to find out what type of sampling scheme is used to select the 10
subsets in 10-fold cross-validation process used in rpart to choose the best
tree. Is it simple random sampling? Is there any documentation available on
this?
Thanks, Penny.
--
View this message in context: http://r.789695.n4.nabble.com/cross-validation-in-rpart-tp3389329p3389329.html
Sent from the R help mailing list
2000 Aug 26
1
Warning - Naive Question Alert
In my research area, researchers are very stingy about sharing data. In
fact, they are frequently downright secretive about these
morsels. Typically, we get fed a diet of summary statistics and the
assurance that the data are *normal* without any necessary documentation
that they really are.
With that as background and assuming that the data really are normal, is
there any way in R (or any
2002 Jan 30
3
R version 1.4.1 is released
I've rolled up R-1.4.1.tgz a short while ago. This is a patch upgrade,
fixing the most important bugs that cropped up after the 1.4.0 release.
A set of recommended packages which have been tested with R-1.4.1 has
been bundled up. Binary distributions are expected to include these
packages.
You can get the files from the developer site
ftp://cvs.r-project.org/pub/CRAN/src/base/R-1.4.1.tgz
2002 Jan 30
3
R version 1.4.1 is released
I've rolled up R-1.4.1.tgz a short while ago. This is a patch upgrade,
fixing the most important bugs that cropped up after the 1.4.0 release.
A set of recommended packages which have been tested with R-1.4.1 has
been bundled up. Binary distributions are expected to include these
packages.
You can get the files from the developer site
ftp://cvs.r-project.org/pub/CRAN/src/base/R-1.4.1.tgz
2004 May 30
1
summary.lm
I ran across this error the other day while using lm(). I confess that I
haven't used it for awhile and haven't been tracking the changes between
versions of R. However, the piece of code below is a tiny modification of
the example in the help file for "lm". I just separated the commands apart
for clarity. A similar piece comes from the help file for
2000 Jun 03
4
How to do linear regression with errors in x and y?
QUESTION: how should I do a linear regression in which there are
errors in x as well as y?
SUPPLEMENT: I've seen folks approach this problem by computing
eigenvectors of the covariance matrix, and that makes sense to me.
But I'm wondering if this has a "pedigree" (i.e. if it makes sense to
folks on this list, and if it's something that has been published, so
I can refer to
2001 Sep 13
0
ps/eps/Word
Thanks to all who offered advice on how to solve a loss of resolution
problem involving ps from R, ps -> eps from Acrobat, and Word.
It appears that this problem will need to be resolved inside R. If I try
to add anything additional (more text, clipart embellishments) to a ps/eps
file (using, say, Adobe Acrobat, PaintShop Pro, Powerpoint, or Adobe
Illustrator), it gets placed as a
2009 Jul 26
3
Question about rpart decision trees (being used to predict customer churn)
Hi,
I am using rpart decision trees to analyze customer churn. I am finding that
the decision trees created are not effective because they are not able to
recognize factors that influence churn. I have created an example situation
below. What do I need to do to for rpart to build a tree with the variable
experience? My guess is that this would happen if rpart used the loss matrix
while creating