Dear John, this appears to be one of the cases where your algorithm is favourable over the nlsLM one. The fitting is now a lot better with ssquared being lower compared to any other fit method I was comparing to.
As I am relatively new to R, it still puzzles me that there are so many packages doing what I want but they seem so hard to track down. Best regards, Martin ______________________________________________ R-help@r-project.org 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.