Hi I really hope someone can help me.
I have just started to work with S-plus, and have not yet understood how it really works. I am now trying to fit a mixed effects model with lme. My goal is to compare four different groups, at several different time points, and I therefore would like to create confidence intervals for linear combinations of my estimated parameters (as I usually do with "contrast" or "estimate" or "lsmeans" in SAS). I have now found out that the vcov-function in the lme4-package could be of great help for me, but I do not know if I can use lme4 when working with S-PLUS 6.1, or is it only for R. When I write >library(MASS) I find lme3, where there is a vcov-function, but if I understand it correctly it works with lm and not with lme... If I can use lme4 with s-plus 6.1, what shall I do in order to install it on my computer? I am grateful for all help I can get? best regards Anna Persson ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html