On Tue, 18 Apr 2017, cheikh diabang wrote: > Hello. I would like to write gambas code which determines the polynomial of a > set of x, y coordinates. Is there anyone who has used it to help me please.
If your polynomial has real or complex coefficients you can use gb.gsl's [1] Polynomial class. But while the documentation says arithmetic operators are overloaded in gb.gsl, this isn't entirely true for polynomials. In particular multiplication of polynomials is not supported. You have to implement that yourself using the array accessors. Addition and multiplication of polynomials is all you need for Lagrange polynomials [2] which solve your interpolation problem. I have done it before, it's straightforward. Regards, Tobi [1] http://gambaswiki.org/wiki/comp/gb.gsl [2] https://en.wikipedia.org/wiki/Lagrange_polynomial -- "There's an old saying: Don't change anything... ever!" -- Mr. Monk ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user
