NonlinearFit package

*To*: mathgroup at yoda.physics.unc.edu*Subject*: NonlinearFit package*From*: yverband at vnet3.vub.ac.be (Yves Verbandt)*Date*: Thu, 13 Jan 1994 16:30:58 -0800

Dear Netters, a very simple question : Does the NonlinearFit allow the use of complex numbers and functions. I tried to fit the complex refractive index of some materials and Mma did not seem to understand my command : NonlinearFit[complexindex, cn, {a, b, c, d}] where complexindex = a list of complex indices as a function of energy cn = n + I k where n and k are also function of the energy and of the parameters a, b, c, d. Thank you in advance for any help, Yves. ============================================================================== Yves Verbandt tel. 32-2-641.34.54 Applied Physics Dept. fax. 50 Vrije Universiteit Brussel email yverband at vnet3.vub.ac.be Pleinlaan 2, 1050 Brussel, BELGIUM yverband at vub.ac.be ============================================================================ ==