i ran this model
> model2<-glm(rojos~ageandsex+sector+season+sector:season,quasipoisson)
> glht(model2,linfct=mcp(ageandsex="Tukey"))
General Linear Hypotheses
Multiple Comparisons of Means: Tukey Contrasts
Linear Hypotheses:
Estimate
M - H == 0 0.2898
SUB - H == 0 -0.2261
SUB - M == 0 -0.5159
I tried to do the same changing factor season (with 2 levels) for month
(with four levels), and i get an error and no results
> monthmodel2<-glm(rojos~ageandsex+sector+month+sector:month,quasipoisson)
> glht(monthmodel2,linfct=mcp(ageandsex="Tukey"))
Error en modelparm.default(model, ...) :
dimensions of coefficients and covariance matrix don't match
I understand nothing, Why this is happen.
I beg for your help
-----
Mario Garrido Escudero
PhD student
Dpto. de Biología Animal, Ecología, Parasitología, Edafología y Qca. Agrícola
Universidad de Salamanca
--
View this message in context:
http://r.789695.n4.nabble.com/GLHT-in-multcomp-Two-similar-models-one-doesn-t-work-tp4291875p4291875.html
Sent from the R help mailing list archive at Nabble.com.
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
