From: Suchandra Thapa (s-thapa-11@alumni.uchicago.edu)
Date: Fri 27 Jun 2003 - 12:53:16 EST
Message-id: <1056682396.1244.76.camel@hepcat>
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@alumni.uchicago.edu>______________________________________________ R-help@stat.math.ethz.ch mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
This archive was generated by hypermail 2.1.3 : Tue 01 Jul 2003 - 09:12:09 EST