the package nlrq does median nonlinear regression... among other
things.
url: www.econ.uiuc.edu/~roger Roger Koenker
email [EMAIL PROTECTED] Department of Economics
vox: 217-333-4558 University of Illinois
fax: 217-244-6678 Champaign, IL 61820
On Jul 5, 2004, at 11:08 AM, Ruei-Che Liu wrote:
Hi All,
Could any one tells me if R or S has the capacity to fit nonlinear
regression with Huber's M estimation? Any suggestion is appreciated. I
was
aware of 'rlm' in MASS library for robust linear regression and 'nls'
for nonlinear least squares regression, but did not seem to be able to
find robust non-linear regression function.
Thanks and regards,
Ray Liu
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