Michael L. Doyle wrote:
>> I am in search of a user friendly software program for curve-fitting and
> plotting. Would like to fit with MULTIPLE independent variables
> simultaneously. Would also like to be able to define parts of complex
> functions on separate lines.
>> Any advice? Thanks much.
Microcal Software's Origin is probably what you are looking for. It has a
large number of pre-defined fitting functions. You can also enter your own
fitting functions without much problem, although it is rather slow. The
latest version that I have used is 4.0. It is a 16-bit Windows program and
runs comfortably on a dx2-66 with 8mb. A 32-bit version is due out soon, this
may improve the speed of the user-defined fitting functions. They probably
have a web site, but here is the Letter Head:
Microcal Software, Inc.
One Roundhouse Plaza
Northhampton, MA 01060 USA
Tel (413) 586-2013
Fax (413) 585-0126
Department of Biochemistry - UNH
Biological Science Center
46 College Road
Durham, NH 03824-3544