Message-ID: <1056682396.1244.76.camel@hepcat>
Date: 2003-06-27T02:53:17Z
From: Suchandra Thapa
Subject: nls question
I'm running into problems trying to use the nls function to fit the some
data. I'm invoking nls using
nls(s~k/(a+r)^b, start=list(k=1, a=13, b=0.59))
but I get errors indicating that the step has been reduced below the
minimum step size or an inifinity is generated in numericDeriv. I've
tried to use a variety of starting values for a, b, k but get similar
errors.
Is there anything I can do to get the a fit or is there an alternative
to the nls function?
--
Suchandra Thapa <s-thapa-11 at alumni.uchicago.edu>