[R] How to illustrate an interaction with plotLMER.fnc

[Ben Bolker]

Haverinen-Shaughnessy Ulla <ulla.haverinen-shaughnessy <at> thl.fi> writes:

> 
> Hello, I have built a linear mixed model (with lmer). 
> To illustrate an interaction between 
> two (originally) continuous variable, I would like to 
> plot the effects of X1 versus Y for 1=low and 2=high
> X2. I am using plotLMER.fnc but have not been able to 
> figure out the code. Could you help?
> Thanks, Ulla
> 

  If you don't get an answer here you might try 
r-sig-mixed-models at r-project.org.  Please (1) specify what additional
package(s) you're using and (2) if at all possible include a small
reproducible example (http://tinyurl.com/reproducible-000); this will
greatly increase your chances of getting an answer.

  Ben Bolker