lmList in the nlme package [Was Re: Please reply me]
On Sun, Sep 20, 2009 at 8:06 AM, mino rezayi <mino.rezayi at yahoo.com> wrote:
Hi Professor Bates,I am a M.S student in statistics and I need to study your book (Mixed Effect Models in S - Splus) to learn mixed effect model, but there is examples?just for simple models ?in your book, and in my data there is 5 covariates and 1response variable,I want to make a lmList but I can''t , and there is no example similier to my data , would you please help me?
I assume that you are using R, in which case it is probably more productive to send your questions to the R-SIG-Mixed-Models at R-project.org mailing list. I have taken the liberty of cc:ing the list on this reply. The lmList function takes a formula like the formula for lm but with an additional term of the form | grp at the end to describe the grouping. You would give the formula for your model and the data set. Generally it is easier to help if you provide a reproducible example, perhaps with generated data. Also you should note that lmList does not fit a mixed-effects model. It fits separate models to the data corresponding to each level of the grouping factor.