R help - May 2014 - How to illustrate an interaction with plotLMER.fnc

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

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

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