non-linear fitting software

Mark Yeager mark_yeager at
Mon Nov 23 15:17:59 EST 1998

In article <734kfi$8qh$1 at>, kll at wrote:

> I would like to be able to estimate parameters in models with more than one
> independent variables. Does anyone know of a program which can do this. Which
> algorithm should I use? (I have previously used the Levenberg-Marquardt). In
> addition to the parameter estimation I would like:
> a: error estimates for the parameters, e.g. by a monte-carlo procedure
> b: a statistical measure of the goodness-of-fit
> The program should preferably run on either a PC or Mac although UNIX/LINUX
> should also be possible. Of course a program with a user friendly interface
> like Kaleidagraph would be nice.

Take a look at Regress+:

Mark Yeager -> mark_yeager at

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