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2011 Oct 28
4
Contrasts with an interaction. How does one specify the dummy variables for the interaction
...interaction, and interaction
fitglm0 <- glm(counts ~ row + column, family=poisson(link="log"))
fitglm <- glm(counts ~ row + column + row*column, family=poisson(link="log"))
# Contrasts for model without interaction works fine!
anova(fitglm0)
summary(fitglm0)
con0<-contrast(fitglm0,list(row="1",column="1"))
print(con0,X=TRUE)
# Contrast for model with interaction does not work.
anova(fitglm)
summary(fitglm)
con<-contrast(fitglm,list(row="1",column="1")
print(con,X=TRUE)
# Nor does this work.
con<-contrast(fi...
2011 Oct 28
2
Thank you
Dear r-community,
Today I have completed my PhD. I would like to take this opportunity to thank the r-community for helping me with the r-coding. I use r to do data manipulation during my PhD and I benefit a lot through the discussion in the r-forum.
I will continue using R and help the others too.
Thank you so much.
Regards,
Roslina
UniSA.
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