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Re: polynomial approximation for twenty data points
Hi arthur, what means utilized for your case. Mathematica's Interpolation will do what you want. otherwise, if you need an interpolation in your own C/Fortran code, the answer is not so simple as it seems. a) you can use a Lagrange interpolation but for 20 points it will probably an oscillating function and not usable for you b) you can make a cubic spline approximation, that uses picewise third order polynoms or one of the other 1001 interpolation algorithms. Look at netlib.org for a code. Hope that helps Jens arthur p rohr wrote: > > hello is there any programs on the web that can be down loaded and > utilized for my case? > art.