Displaying 20 results from an estimated 2000 matches similar to: "Anyone successfully install Rgraphviz on windows with R 2.13?"
2010 Dec 29
3
Windows editor suggestions - autosave
I am looking for advice on an editor to use with R (windows) that has an autosave feature. I typically write scripts using the RGui (and tried TinnR yesterday) but I am having continuing problems with BSODs (non R related) and have in the past have had issues with R crashes and would really like a system that does not require me to remember to hit the save button on my script every 10 minutes so
2009 Dec 03
3
Scraping a web page
I would like to be able to submit a list of URLs of various webpages and extract the "content" i.e. not the mark-up of those pages. I can find plenty of examples in the XML library of extracting links from pages but I cannot seem to find a way to extract the text. Any help would be greatly appreciated - I will not know the structure of the URLs I would submit in advance. Any
2009 Aug 19
2
Problem with predict.coxph
We occasionally utilize the coxph function in the survival library to fit multinomial logit models. (The breslow method produces the same likelihood function as the multinomial logit). We then utilize the predict function to create summary results for various combinations of covariates. For example:
2009 Apr 28
1
Problem with Random Forest predict
I am trying to run a partialPlot with Random Forest (as I have done many times before).
First I run my forest... Cell is a 6 level factor that is the dependent variable - all other variables are predictors, most of these are factors as well.
predCell<-randomForest(x=tempdata[-match("Cell",names(tempdata))],y=tempdata$Cell,importance=T)
Then I try my partial plot to look at the
2006 Jun 01
1
Help with evaluation of expressions
Hello all:
I have searched through the help files and I have been unsuccessful in
solving this problem.
I am trying to create a small wrapper function that will go around a
call to a plot function and create a windows metafile in the directory
and also write the name of the file to a text file. The purpose is to
efficiently bring a large number of plots into powerpoint. I am using
2006 Mar 08
1
Accessing functions in a library
I am trying to write a modified function to plot an rpart object. By
using getS3method I can see the plot and text code that I want to
modify. Since I don't want to modify the package, I create a new
function to plot the rpart object. The problem is that the original
function calls many rpart specific functions that are only visible
inside the rpart namespace. Therefore, when I call my
2011 Jun 01
0
Memory management
I am trying to run a very large Bradley-Terry model using the BradleyTerry2 package. (There are 288 "players" in the BT model).
My problem is that I ran the model below successfully.
WLMat is a win-loss matrix that is 288 by 288
WLdf<-countsToBinomial(WLMat)
mod1<-BTm(cbind(win1,win2),player1,player2,~player,id="player",data=WLdf)
Then I needed to run the same model
2008 Jun 25
1
LDA on pre-assigned training and testing data sets
Dear r-help
I am trying to run LDA on a training data set, and test it on another data set with the same variables. I found examples using crossvalidation, and using training and testing data sets set up with sample, but not when they are preassigned.
Here is what I tried
# FIRST SET UP A DATAFRAME WITH ALL THE DATA AND CREATE NEW VARIABLES
traintest1 <-
2007 Sep 07
2
confusion matrix - better code?
Hi,
I’ve written some code to obtain a confusion matrix when the true classification and the predicted classification are known. Suppose true classification is called “tr” and predicted classification is “pr”. I have 4 classes in tr, but only 3 classes out of 4 are predicted in “pr”. Following is my code, but looks quite “clunky” to me. I wonder if you have any suggestions to improve it.
2007 Jan 25
0
Creating dendrograms from a table
I am trying to create a dendrogram object to be able to display a
multiway table. I understand how the dendrogram object is structured, a
nested list of lists, but I am having trouble trying to create that
structure from a table. Basically, what I would like to do is pass a
multiway table, say table(a,b,c) to a function and have it display the
table as a dendrogram. If a,b,c, and d are all
2007 Feb 05
0
Help with party package
I am just starting to experiment with the party package and I am getting
strange results. In the examples, the "statistic" and "criterion" seem
related, i.e. criterion is a 1-p.value and statistic is the test
statistic. Higher statistics are associated with higher criteria
values. When I run these models on my own dataset, the highest
statistic ends up getting a 0.00
2008 May 23
3
Percentages for categorical data by group
I can think of several ways to blunt force hard code what I want but I
imagine there is a command or two that can be easily combined to do this:
I have a data frame with about 23000 observations. There first variable is
the group to which the observation belongs (about 500 different groups). The
second variable is a response for each observation that is a 1,2,3,4 or 5. I
want to be able to
2008 Jun 06
5
request: a class having max frequency
Dear R users
I have a very basic question. I tried but could not find the required result. using
dat <- pima
f <- table(dat[,9])
> f
0 1
500 268
i want to find that class say "0" having maximum frequency i.e 500. I used
>which.max(f)
which provide
0
1
How can i get only the "0". Thanks and
best regards
Muhammad Azam
Ph.D. Student
Department of
2011 Jul 25
1
Rgraphviz installation problem
Dear experts
I installed Rgraphviz with the following command:
source("http://www.bioconductor.org/biocLite.R")
biocLite("Rgraphviz")
But had a problem when I tried to load it.
This says that libcdt-4.dll is missing in your computer and the following
message in R window:
> library("Rgraphviz")
Loading required package: graph
Loading required package:
2011 Jul 21
2
installing Rgraphviz
Hi,
I attempted to install Rgraphviz but ran into a problem. It requires
graphviz 2.20.3. I have this and installed it but the Windows 7 system
path variable has to be modified to include the path to the graphviz bin
file. How do I do this on Windows 7? It's been a long time since I had
to change the path variable.
Thanks,
Walt
________________________
Walter R. Paczkowski, Ph.D.
2011 Apr 06
5
Problemas con Rgraphviz
Hola a todos..!!
Necesito trabajar con el package classGraph, entiendo que dicho package requiere
como previo a Rgraphviz. Pues bien, al tratar de cargarlo aparece el siguiente
mensaje de error:
Error : .onLoad failed in loadNamespace() for 'Rgraphviz', details:
call: value[[3L]](cond)
error: unable to load shared object
2010 Mar 31
1
You are right and the problem is solved. Re: about the possible errors in Rgraphviz Package
Hi Martin,
It is really a 'PATH' problem. After adding C:\Program
Files\Graphviz2.20\bin to the 'PATH' environment variable, the
Rgraphviz package can be loaded without any error messages.
Sorry that I ONLY set my 'PATH' environment variable correctly
for R but not for Graphviz.
Thank you and Duncan so much for your great help.
Howard
On Tue Mar 30 18:12:54
2009 Mar 30
1
Help with tm assocation analysis and Rgraphviz installation.
Help with tm assocation analysis and Rgraphviz installation.
THANK YOU IN ADVANCE
Question 1:
I saved two txt file in C:\textfile
And each txt file contents only one text column, and both have 100 records.
I know term “research” occurs 49 times, so I want to find out which other
words are correlated to this word, and I got tons of association ‘1’ .
I tried other terms, and no
2009 Jan 30
1
Rgraphviz install
Hi
I've tried several times and followed what others suggest in installing Rgraphviz (https://stat.ethz.ch/pipermail/bioconductor/2008-June/022838.html)
But I could not load library(Rgraphviz).
There's a message that 'This application has failed to start because libcdt-4.dll was not found'
Could anyone suggest me how to make it work?
june
2004 Sep 22
1
Rgraphviz compilation error
Hi,
I am installing Rgraphviz at Linux Fedora Core 2 with
32 bit AMD athlon with 512 RAM.
I have installed graphviz version:
graphviz-1.16-1.src.rpm installed already on system.
I am doing:
$ R CMD INSTALL -l /usr/local/lib/R/library
Rgraphviz_1.4.0.tar.gz
---------------------------------
* Installing *source* package 'Rgraphviz' ...
** libs
gcc -I/usr/local/lib/R/include