similar to: Connecting R-help and Google Groups?

Hi, I'm trying to do a linear regression style one-way ANOVA using some data in a data frame, and (perhaps because I am still relatively unfamiliar with both R and statistics) what I thought I should do was to make the data frame into a factor. By that I mean that I have a data frame whose column labels are the levels of the factor, and the values in the frame are numeric values for the

Suppose you have a vector of data in x and response values in y. How do you plot together both the points (x,y) and the curve that results from the fitted model, if the model is not y ~ x, but a higher order polynomial, e.g. y~poly(x,2)? (In other words, abline doesn't work for this case.) Thanks, --Paul -- Paul Lynch Aquilent, Inc. National Library of Medicine (Contractor)

Hello! I am trying to read Ferret index files from Windows machine on my Mac G5 Leopard machine, but the following returns nil: Ferret::Index::IndexReader.new( index_paths ) Should this work? Are index files guaranteed to be platform independent or not? Is there any problem if files (top direectory) are renamed? izidor P.S. I can create the index myself and then everything works.

Suppose you have 4 related vectors: a.id<-c(1:25, 1:25, 1:25) a.vals <- c(101:175) # same length as a.id (the values for those IDs) a.id.levels <- c(1:25) a.id.ratings <- rep(letters[1:5], times=5) # same length as a.id.levels What I would like to do is specify a rating from a.ratings (e.g. "e"), get the vector of corresponding IDs from a.id.levels (via

Is there a download page for mongrel_cluster? I see that "gem install mongrel_cluster" works, but I can''t see where it''s coming from. Usually gems have some sort of project page somewhere. -- Paul Lynch Aquilent, Inc. National Library of Medicine (Contractor)

Hi, everybody, 3 questions about R-square: ---------(1)----------- Does R2 always increase as variables are added? ---------(2)----------- Does R2 always greater than 1? ---------(3)----------- How is R2 in summary(lm(y~x-1))$r.squared calculated? It is different from (r.square=sum((y.hat-mean (y))^2)/sum((y-mean(y))^2)) I will illustrate these problems by the following codes:

I've made some normal plots of my data using qqplot, and now I would like to fit a line to the points on the plot and check the correlation coefficient to have a more objective measure of how straight the line is. Is there a simple way of doing that? (I'm still pretty new to R.) Thanks, --Paul -- Paul Lynch Aquilent, Inc. National Library of Medicine (Contractor)

Hi! My Platform: Windows 2000 R version >1.5 Active Perl 5.6 Rtools at the start of the PATH. I am trying to build a package. The functions are written only in R (no C code). I am trying to proceed as described in R-exts.pdf But instead to get a build package i am getting (see below). At first glance it seems to me that i understand the output. At something similar i am looking most of my

Hi, I've downloaded R-2.6.2-win32.exe (base) from two CRAN sites (http://mirrors.ibiblio.org/pub/mirrors/CRAN/ and http://lib.stat.cmu.edu/R/CRAN/) and for both of those sites the expected MD5 hash is reported to be: ed512872818707f27ca05f08be7363c2 *R-2.6.2-win32.exe (See, for example, http://lib.stat.cmu.edu/R/CRAN/bin/windows/base/md5sum.txt). However, when I compute the MD5

I've just installed the Cygwin version of rsync, with an aim of syncing to the development version, as recommended on <http://cran.r-project.org/sources.html>. Could someone give an example of the syntax to invoke it? From the man page, I expected rsync rsync.rproject.org:: to give me a file listing, but I get: unknown host: rsync.rproject.org Other network utilities (e.g. ssh)

Dear all, Given the following vector: > (z <- c('R project', 'hello world', 'something Else')) [1] "R project" "hello world" "something Else" I know how to obtain all capitals or all lower case letters: > tolower(z) [1] "r project" "hello world" "something else" > toupper(z) [1] "R

Hola a todos, Mi nombre es Juanjo. Llevo un tiempo intentado hacer funcionar un programa que necesita de la instalación de RPROJECT y REXCEL. He mirado varias guías e instalado los programas pero obtengo varios errores. El principal es que tras instalar RProject, Rexcel y statcon y al intentar correr esta macro desde Visual Basic… Sub Start() RInterface.StartRServer

Is there an option for filtering stop words out of the query string, so that queries that contain stop words don''t return zero results? It has been several years, but I think that when I was on a project that was writing a search engine, we used to filter stop words both out of the index and out of the query string, after it was parsed. This allows a query like [cold and sinus] to

I've been searching around for a function for computing the Brown-Forsythe F* statistic which is a substitute for the normal ANOVA F statistic for when there are unequal variances, and when there is evidence of non-normality. A couple of other people have asked this question, the responses I found have been: ?oneway.test However, that function appears to use the Welch W statistic which,

Each morning when I return to work, I find that my WEBrick server has stopped working. The process is still running, but when I try to connect to it with a web browser, the browser doesn''t get any response back. Usually when this happens I cannot control-c the process to shut it down, and not even "kill" works-- I have to get rid of it with kill -9. I then restart it and it

I'm looking for a book for someone completely ignorant of statistics who wishes to learn both statistics and R. I've found three possibilities, one by Verzani ("Using R for Introductory Statistics"), one by Crawley ("Statistics: An Introduction using R"), and one by Dalgaard ("Introductory Statistics with R"). Do these books have different emphases,

I am facing issues while installing RMySQL package on windows(32 bit) installation of R-Project. I am getting the following warning messages. Warning messages: 1: running command 'C:/PROGRA~1/R/R-213~1.2/bin/i386/R CMD INSTALL -l "C:/Program Files/R/R-2.13.2/library" D:\DOCUME~1\nagga002\LOCALS~1\Temp\RtmpLZndlE/downloaded_packages/RMySQL_0.9-3.tar.gz' had status 1 2: In

Hello, I found a problem to transfer my package on the site ftp://cran.rproject.org/incoming/ . Access is not allowed. Please,could you give me the settings for connecting to your server to transfer my package using the FileZilla. Best Regards Fadia [[alternative HTML version deleted]]

I've cited R in an article accepted by a journal using the following reference: >R Development Core Team (2004), R: A language and environment for >statistical computing. R Foundation for Statistical Computing, Vienna, >Austria. ISBN 3-900051-00-3, <http://www.Rproject.org>. I received the following query about my citation. > 7. For R Development Core Team [2004],

Hello Everyone, I'm trying to write a table to a specific location in my database from R. When I use the following code, it is going directly into the first part of the server which is named 'master' I want to put it onto a different part of the server called 'HRISK_1'. I think I have to change the tablename location or specify the location in the databse somehow. Could you