[Kst] Ways to evaluate expressions...

Brisset, Nicolas Nicolas.Brisset at eurocopter.com
Mon Nov 14 18:14:08 CET 2005


I was looking at how qtiplot does non-linear fitting (with gsl) to try
and develop a kst plugin, and it actually uses a math parser lib which
you may be interested in. It's at: http://muparser.sourceforge.net/ 
I would like to avoid the dependence on that one (gsl should be enough),
but I need to find out how to :
- compute the value of an expression at a given point (with some
numerical values assigned to the formal parameters being fitted)
- compute the (numerical) derivative of a function at a given point wrt
to a given variable

Any hint at how to do that with kst bits will be appreciated :-)


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