# [R] New psi with rlm

From: Angelo Secchi <secchi_at_sssup.it>
Date: Fri 10 Feb 2006 - 06:02:48 EST

Hi,
How can I define a new psi function in the rlm comand? In particular I would like to implement the case for

\rho(u)=0.5*(u^2) and \psi(u)=u

in order to assume normally distributed errors. Any help?
Thanks

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Angelo Secchi                     PGP Key ID:EA280337

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