New psi with rlm

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New psi with rlm

Angelo Secchi

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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