R help - Dec 2005 - covariance structures in lmer

Hi,

I usually use lme from the nlme library. Now I have read an article about
lmer in Rnews and lmer seemed to me more comfortable to use. Unfortunately,
I didn't find out how to use covariance structures (e. g. corSymm(),
corAR1()). Is there a way to use them similarly as in lme ? Is it
implemented ? If somebody knows, please let me know.

Thank you very much in advance,

Stephan



-----------------------------
Dr. Stephan Moratti (PhD)
Dept. of Psychology
University of Konstanz
P.O Box D25
Phone: +40 (0)7531 882385
Fax: +49 (0)7531 884601
D-78457 Konstanz, Germany
e-mail: Stephan.Moratti at uni-konstanz.de


http://www.clinical-psychology.uni-konstanz.de/

Stephan:

It is my understanding that the corClass functions are not able to be
used with lmer() at this time.

Harold
 

-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Stephan Moratti
Sent: Friday, December 02, 2005 6:58 AM
To: r-help at stat.math.ethz.ch
Subject: [R] covariance structures in lmer

Hi,

I usually use lme from the nlme library. Now I have read an article
about lmer in Rnews and lmer seemed to me more comfortable to use.
Unfortunately, I didn't find out how to use covariance structures (e. g.
corSymm(), corAR1()). Is there a way to use them similarly as in lme ?
Is it implemented ? If somebody knows, please let me know.

Thank you very much in advance,

Stephan



-----------------------------
Dr. Stephan Moratti (PhD)
Dept. of Psychology
University of Konstanz
P.O Box D25
Phone: +40 (0)7531 882385
Fax: +49 (0)7531 884601
D-78457 Konstanz, Germany
e-mail: Stephan.Moratti at uni-konstanz.de


http://www.clinical-psychology.uni-konstanz.de/

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