Below taken from the GLMM FAQ webpage is the confidence interval plot from model fm1 with nlme, using the Orthodont data set:
I ran the code and got a plot below:
The difference between the two plots is not very apparent, but still noticeable upon a careful comparison. The one I generated seems to match better with the plot for the same data by lme4 in the FAQ document.
Below taken from the GLMM FAQ webpage is the confidence interval plot from model fm1 with nlme, using the Orthodont data set: I ran the code and got a plot below: The difference between the two plots is not very apparent, but still noticeable upon a careful comparison. The one I generated seems to match better with the plot for the same data by lme4 in the FAQ document.