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Hi can anyone recommend a perl module that I can use to run R? Stephen

Dear R-users, I use R to run spatial stuff and it takes up a lot of ram. Runs can take hours or days. I am thinking of getting a new desktop. Can R take advantage of the dual-core system? I have a dual-core computer at work. But it seems that right now R is using only one processor. The new computers feature quad core with 3GB of RAM. Can R take advantage of the 4 chips? Or am I better off

...51-07-0 Any thoughts? I would be happy to compile R locally if that would help. Andy ---------------------------------------------------------------------- Andrew J Perrin - andrew_perrin (at) unc.edu - http://perrin.socsci.unc.edu Assistant Professor of Sociology; Book Review Editor, _Social Forces_ University of North Carolina - CB#3210, Chapel Hill, NC 27599-3210 USA New Book: http://www.press.uchicago.edu/cgi-bin/hfs.cgi/00/178592.ctl

...currently-preferred method of creating a link from a PostgreSQL database and R? Thanks. ---------------------------------------------------------------------- Andrew J Perrin - andrew_perrin (at) unc.edu - http://www.unc.edu/~aperrin Assistant Professor of Sociology; Book Review Editor, _Social Forces_ University of North Carolina - CB#3210, Chapel Hill, NC 27599-3210 USA

Hi, im little bit confused about Cohen's Kappa and i should be look into the Kappa function code. Is the easy formula really wrong? kappa=agreement-chance/(1-chance) many thanks christian ############################################################################### true-negativ:7445 false-positive:3410 false-negativ:347 true-positiv:772 classification-aggrement:68,6%

I have downloaded R-2.3.0.tar.gz for Linux 64 bit processor 1. Untar tar -zxvf R-2.3.0.tar.gz 2. changed the directory to the newly created directory R-2.3.0 3. Typed ./configure 4. Typed make 5. Copied the Script File R from directory R-2.3.0/bin/R to /usr/local/bin/R. 6. Typed R Fatal error: unable to open the base package I get the error message. Please advice [[alternative HTML version

In Henric's recent post, he included this output: @BOOK{R:Harrell:2001, AUTHOR = {Frank E. Harrell}, TITLE = {Regression Modeling Strategies, with Applications to Linear Models, Survival Analysis and Logistic Regression}, PUBLISHER = {Springer}, YEAR = 2001, NOTE = {ISBN 0-387-95232-2}, URL =

Hi, we are looking for a new workstation for big datasets/applications (easily up to 100'000 records and up to 300 Variables) using R. As an example: Variable Selection for a multivariate regression using stepAIC. What is the best configuration for a workstation to reach a high performance level for computing with R? Single core or multi core (is R together with nws package really able to

...> make install > > ---------------------------------------------------------------------- > Andrew J Perrin - andrew_perrin (at) unc.edu - > http://perrin.socsci.unc.edu <http://perrin.socsci.unc.edu> > Assistant Professor of Sociology; Book Review Editor, _Social Forces_ > University of North Carolina - CB#3210, Chapel Hill, NC 27599-3210 USA > New Book: http://www.press.uchicago.edu/cgi-bin/hfs.cgi/00/178592.ctl <http://www.press.uchicago.edu/cgi-bin/hfs.cgi/00/178592.ctl> > > > > On Wed, 31 May 2006, Pramod Anugu wrote: > &...

A colleague was asking me if R does multi-level modelling as opposed to multiple regression. Since I have no knowledge of multi-level modelling (except 5 minutes googling ) I thought that I would as here. Does are offer any multi-level modeling packages? It looked like arm might be one but I was not sure. Thanks