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

[Christoph Scherber]

Dear Ulla,

Wouldn´t it be more straightforward to use John Fox´s effects package 
for this?

library(effects)
plot(effect("variable1:variable2",model))

Best wishes
Christoph

Am 16.05.2014 16:50, schrieb Haverinen-Shaughnessy Ulla:
> 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
>
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