Dear S-users,
for non-statistical reasons I would like to adjust, before using predict, some
coefficients of a glm. For the sake of argument suppose I only want to adjust
the constant as follows.
> ttt_aut4.freq.glm.final
> ttt$coef[1]_ aut4.freq.glm.final$coef[1] + log(0.96)
> ttt$coef[1]
(Intercept)
-5.385395
> coef(ttt)[1]
(Intercept)
-5.344573
What is going on? The correct answer is -5.385395, see the original
constant below.
> aut4.freq.glm.final$coef[1]
(Intercept)
-5.344573
> coef(aut4.freq.glm.final)[1]
(Intercept)
-5.344573
When I call predict passing ttt as the model and using the newdata argument
which version of the constant will be used?
Thanks for your help,
Gérald Jean
Analyste-conseil (statistiques), Actuariat
télephone : (418) 835-8839
télecopieur : (418) 835-5865
courrier électronique: gerald.jean@spgdag.ca
"In God we trust all others must bring data"
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