On Fri, 5 Jan 2007, francogrex wrote: [quoting Ingmar Vissar without attribution, contrary to the posting guide.]
> Franco, > You can provide lower and upper bounds on the parameters if you use optim > with method="L-BFGS-B". > Hth, Ingmar > > Thanks, but when I use L-BFGS-B it tells me that there is an error in > optim(start, f, method = method, hessian = TRUE, ...) : L-BFGS-B needs > finite values of 'fn' It sounds as if you have ignored the advice to scale the problem via control options 'fnscale' and 'parscale'. -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
