Message-ID: <199901121159.JAA02061@de.ufpe.br>
Date: 1999-01-12T09:59:27Z
From: Francisco Cribari
Subject: glm families in R
Is the following difference between S+ and R normal or is it a bug?
Thanks. FC.
PS: S+ 4.5 for Windows and R 0.63.1 for Windows.
S-PLUS output:
> inverse.gaussian()$deriv
> function(mu)
> -2/mu^3
R output:
> inverse.gaussian()$deriv
> NULL
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
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