All,
(I have also posted this to the R-help listserv as I
am using both R and Splus.) I am a relative newcomer
to Splus and have been learning about the NLME
package and mixed modeling. I have been able to
successfully fit some simple linear and 4PL logistic
models using lme( ) and nlme( ). My questions are
(1) How can I import a SAS dataset with DATE9.
formatted
date variable and get this information into a
convenient format for use with the trellis graphs?
In particular, I would to produce panel plots of
the sort that Pinheiro and Bates discuss in their
very helpful book.
(2) How can I plot the fitted response function along
with 95% confidence intervals around the estimated
mean response? I suspect this is harder to do
with
nonlinear mixed models, and I would really
appreciate some guidance here.
(3) How can I find and plot prediction intervals for
individual subjects?
Sorry for what must be trivial questions! I really
appreciate any help.
Thanks,
Greg
__________________________________
Do you Yahoo!?
The all-new My Yahoo! - Get yours free!
http://my.yahoo.com
|