I've attached a simple java file that interpolates and prints functions (results on second files) I expected at least to have a continue function
Moreover I catched x and y values from wikipedia that gives this functions for natural cubic spline with theese points http://upload.wikimedia.org/math/9/a/7/9a712abc0f13501fd9ccbd1dae69789a.png Thank you, Nico 2013/8/22 Gilles <gil...@harfang.homelinux.org> > On Thu, 22 Aug 2013 17:02:34 +0200, Nico Caprioli wrote: > >> Since I need a spline interpolation I used your library do calculate it >> but >> it seems it is not working good. >> >> If I understood javadoc i need two double[] arrays: >> - double[] x: the absissa of every point >> - double[] y: the ordinate/value of points in the same order of x >> >> Now after interpolation I try to print it through: >> System.out.println(Arrays.**toString(interpolation.**getPolynomials())); >> where interpolation is the PolynomialSplineFunction generated. >> >> It outputs some functions but only the first is correct, why? >> >> Thank you! >> > > From the above information, it is hard to figure out what you did, > what you expected and what you got. > Please attach a minimal, but working, code example. > > Regards, > Gilles > > > ------------------------------**------------------------------**--------- > To unsubscribe, e-mail: > user-unsubscribe@commons.**apache.org<user-unsubscr...@commons.apache.org> > For additional commands, e-mail: user-h...@commons.apache.org > >
0.9937235897435898 x - 0.15222358974358977 x^3 0.8415 + 0.5370528205128204 x - 0.4566707692307693 x^2 - 0.012582051282051218 x^3 0.9093 - 0.4140348717948718 x - 0.494416923076923 x^2 + 0.1402517948717948 x^3 0.1411 - 0.9821133333333333 x - 0.0736615384615386 x^2 + 0.15787487179487186 x^3 -0.7568 - 0.6558117948717948 x + 0.399963076923077 x^2 + 0.053748717948717904 x^3 -0.9589 + 0.30536051282051285 x + 0.5612092307692307 x^2 - 0.18706974358974357 x^3
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