[R] confidence intervals for linear combinations when using lme

Deepayan Sarkar deepayan at stat.wisc.edu
Fri Jul 23 13:58:31 CEST 2004

On Friday 23 July 2004 05:36, Anna.H.Persson at astrazeneca.com wrote:
> 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.

As far as I know, there are no plans (by the developers) to port lme4 to 
work with S-PLUS.


More information about the R-help mailing list