[R] Missing names in LMER and GLM

Greg Snow Greg.Snow at imail.org
Mon Feb 1 21:48:11 CET 2010

If your factor is something like classes then do

> levels(classes)

And whichever level is first is the default baseline.  To change the base line you want to change the factor.  You can do this using the factor function or the relevel or reorder functions (just be sure to save the result, they don't change things in place).

Hope this helps,

Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org

> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of vickih
> Sent: Monday, February 01, 2010 1:35 PM
> To: r-help at r-project.org
> Subject: Re: [R] Missing names in LMER and GLM
> I'm sure this is an equally obvious question, but how would you change
> that
> baseline? Suppose I need MN to be the baseline instead of MNX. I just
> can't
> work out why MNX is chosen as it.
> Thanks again
> --
> View this message in context: http://n4.nabble.com/Missing-names-in-
> LMER-and-GLM-tp1459176p1459259.html
> Sent from the R help mailing list archive at Nabble.com.
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