[R] Why lmer() is not working, altough lme4 is installed?

[Uwe Ligges]

Petar Milin wrote:

> I have installed lme4 library, but when I try something with lmer()
> function, I receive error message. On the other hand, I can use lme()
> function from the same library. Are those two the very same function or
> not? I am a bit confused.

1. lme4 is a *package*, not a library
2. a function lme() is not part of recent versions of lme4. You told us 
you are using an ancient version of R, but nothing about the version of 
lme4 (which is porbably outdated as well, since new versions won't work 
on such an ancient version of R, I believe).
3. Why do you conceal the error message of lmer()?
Please read the posting guide and send information that is helpful for 
the helpers to help.

Uwe Ligges



> I am using:
> $platform: "i386-pc-linux-gnu"
> $arch: "i386"
> $os: "linux-gnu"
> $system: "i386, linux-gnu"
> 
> $major: "2"
> $minor: "0.1"
> $year: "2004"
> $month: "11"
> $day: "15"
> 
> Sincerely,
> Petar Milin
> Assistant Professor
> Department of Psychology
> University of Novi Sad
> Serbia and Montenegro
> 
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