[R] bug in multcomp?

[Richard M. Heiberger]

The only obvious typo is the misspelling of "Tukey".  Uppercase is
necessary.
But that is not the cause of the current error.  I can't duplicate the
problem
from your description.  Look at the data.frame data_mcp.  If that doesn't
give
you the hint, then you will need to send the data to the list, the standard
"commented, minimal, self-contained, reproducible code."

Rich

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On
Behalf Of Robert Cribbie
Sent: Wednesday, November 07, 2007 12:27 PM
To: r-help at r-project.org
Subject: [R] bug in multcomp?

I am running a linear model with achiev as the outcome and major as my 
iv (5 levels). The lm statement runs fine, but for the glht command I 
get the following error. I noted that someone else asked the same 
question a while back but received no reply. I am hoping someone might 
know what is happening.

 anovaf2<-lm(achiev ~ major, data=data_mcp)
 > pairwise<- glht(anovaf2,linfct = mcp(major = "tukey"))
Error in mcp2matrix(model, linfct = linfct) :
        Factor(s) major have been specified in 'linfct' but cannot be 
found in 'model'!


Any help would be much appreciated.

Rob.


-- 
Robert A. Cribbie, PhD
Department of Psychology
York University
Toronto, ON    M3J 1P3
Phone: 416-736-2100 x88615
Email: cribbie at yorku.ca
Fax: 416-736-5814
Website: http://www.psych.yorku.ca/cribbie

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