"Eli" wrote in message <email@example.com>... > I'm still interested in getting help for this. I have tried but can't get this to work. > > If you could offer some help or re-direct me to another sub-forum/newsgroup that would be really helpful.
It might be easier if, instead of the GUI, you used programmatic curve-fitting such as 'lsqnonlin', 'lsqcurvefit' or one of the others that allow parameter bounds. (Unless I overlooked something in the documentation, 'NonLinearModel.fit' and 'nlinfit' don't allow parameter bounds.)
The problem I (and perhaps others) have in responding to your question is that you stated:
'QUESTION: Is there some way that I can specify the custom fitting equation, initial guesses, lower and upper bounds from the command line similar to how I specified the exclusion range?'
'NOTE: I do not want to perform command line curve fitting.'
So I'm not sure what you actually want to do. Programmatic curve-fitting (from a script, not the command line) is easy enough and will do what you want, even if it's not quite as straightforward as using the GUI. I've only done programatic curve-fitting and haven't had any problems with it.
Your use of 'Inf' and '-Inf' in your bounds also makes me a bit queasy. Why not '1E+100' and '-1E+100' or some such instead? It would achieve the same essential effect and wouldn't produce an unbounded or undefined result if your objective function wandered off into the wilderness.