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  glmsdata
  
2008 Mar 25
0
Behaviour of interactions in glm
...3        1       1.00
4         2        1        0.33    2.77
5         2        2        0.4     0
6         2        3        5       0
(I've given a sample here, as my data has around 10,000 records and about 
30 columns).
So, I've prepared my data using something similar to:
glmdata <- read.table("C:\\MyData.csv", sep=",", header=TRUE)
glmdata$FactorA <- C(factor(glmdata$FactorA),base=1)
glmdata$FactorB <- C(factor(glmdata$FactorB),base=2)
glmfit <- glm(Response ~ 1 + FactorA:FactorB, family=(Gamma( 
link="log")), weights = Weight, d...