help in M-estimator by R

-----Original Message-----
i have to do something in robust regression by R programm , 
and i have some problems as following:

*the first :*

Afte loading MAS, type 'hubers' (without brackets) and look at the code. That should give you a clue.

new psi ( psi.a=r/(1+(r/k)^2)) ,k=1.345 and get on new 
coefficients to the
model, and, Is all the arguments are necessary ? " i want short code"

again ... *how can i do this ... *

Look at psi.huber (see above for how) and duplicate the code, substituting your calculation. Then look at the 'psi' argument in ?rlm



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