search for: toxicogenom

> Toxicogenomics Statistician > > The successful candidate will provide statistical support to nonclinical > areas of R&D, especially in the areas of investigative toxicology, safety > biomarkers, and toxicogenomics. The candidate will collaborate with > scientists to plan meaningful experim...

...rsion routine for these objects (or maybe there's already a conversion available for lm?). I assume that the data do not need to be analyzed with a any other software than R. I'm happy for any suggestions and links to get some more info on this. kid regards, Arne -- Arne Muller, Ph.D. Toxicogenomics, Aventis Pharma arne dot muller domain=aventis com

...onably large numbe rof replicates within each cell (even though not balanced). However, since I've only 0 to 4 replicates I'm worried that the standard anova may not be the way to go. Are there special packages for unbalanced designs like this? kind regards, Arne -- Arne Muller, Ph.D. Toxicogenomics, Aventis Pharma arne dot muller domain=aventis com

...tted and value vectors are >1300 elements long. I couldn't find a more compact form of storage that I is still easy to explore afterwards. Suggestions on how to get this done more efficiently (in terms of memory) are greatfully received. kind regards, Arne -- Arne Muller, Ph.D. Toxicogenomics, Aventis Pharma arne dot muller domain=aventis com

...coefficient attribute is a matrix, and with the "4" you refere to the pvalue (at least in lm - don't know if summary(glm) produces sligthely different output). to skip the intercept (1st row): v <- summary(glmfit)$coefficients[-1,4] hope this helps, Arne -- Arne Muller, Ph.D. Toxicogenomics, Aventis Pharma arne dot muller domain=aventis com > -----Original Message----- > From: r-help-bounces at stat.math.ethz.ch > [mailto:r-help-bounces at stat.math.ethz.ch]On Behalf Of Roy Sanderson > Sent: 06 April 2004 14:36 > To: r-help at stat.math.ethz.ch > Subject: [R] Sto...

...it doesn't look different from e.g. "dose025mM-000mM"). Do you've any suggestions what I'm doing wrong here (assuming that I believe the SAS result)? Any hints what I can do to further analyse this problem? Many thanks for your help, +regards, Arne -- Arne Muller, Ph.D. Toxicogenomics, Aventis Pharma arne dot muller domain=aventis com

Hello, A collegue of mine has compared the runtime of a linear model + anova in SAS and S+. He got the same results, but SAS took a bit more than a minute whereas S+ took 17 minutes. I've tried it in R (1.9.0) and it took 15 min. Neither machine run out of memory, and I assume that all machines have similar hardware, but the S+ and SAS machines are on windows whereas the R machine is Redhat