On Sun, 29 Apr 2012 11:27:06 -0700 (PDT) arun <smartpink111 at yahoo.com> wrote: > I tried to get xyplot shrink fit for my mixed model._ But, the mixed model line is not seen in the graph. > I would like to know if there is anything wrong with my code. Typo? Try panel.abline(fixef(fm1),... or panel.abline(ff), ...