[R] Fwd: R package or function for ordinal predictors and continous response

Dear list, I have a microarray data in which gene expression is the response (dependent) variable. Can anybody tell me which package/function in R should I use to model the gene expression with an ordinal predictor (Independent Variable) Thanks, Shirley __

[R] where to get chr_rpts file for dbSNP human 36.3 assembly

Dear list, In terms of dbSNP database in NCBI, I can get the chr_rpts files for the most recent 37.3 assembly from the following FTP site, ftp://ftp.ncbi.nih.gov/snp/organisms/human_9606/chr_rpts/ My question is how/where I can get these chr_rpts files based on the 36.3 assembly Thanks, Shirley

[R] anova function to test the difference between two coefficients in nlme package

Dear Dr. Bates, and R-help, I've tried the anova function to test the difference between two coefficients, as shown on page 225 of your book "Mixed Effects Models in S and S-Plus (Statistics and Computing)". When I type: anova( fm2BW.lme, L = c(TimeDiet2 = 1, TimeDiet3 = -1) ) I got the follow

Re: [R] anova function to test the difference between two coefficients in nlme package

= 1)) Thanks, Shirley On Jan 22, 2008 10:38 AM, shirley zhang <[EMAIL PROTECTED]> wrote: > Dear Dr. Bates, and R-help, > > I've tried the anova function to test the difference between two > coefficients, as shown on page 225 of your book "Mixed Effects Models > in S

[R] how to use anova() to test the sum of coefficients in nlme package

Dear R-help, In nlme package, anova () can be used to test the difference between two coefficients as shown on page 225 of "Mixed Effects Models in S and S-Plus": anova(fm2BW.lme, L = c("Time:Diet2" = 1, "Time:Diet3" = -1)) Now my question is instead of test the difference between two coefficien