Example: The B-spline interpolant
A B-Spline interpolant to data is computed. The value of the spline at point .23 is printed.
using System;
using Imsl.Math;
public class BsInterpolateEx1
{
public static void Main(String[] args)
{
int n = 11;
double[] x = new double[n];
double[] y = new double[n];
double h = 2.0 * System.Math.PI / 15.0 / 10.0;
for (int k = 0; k < n; k++)
{
x[k] = h * (double) (k);
y[k] = System.Math.Sin(15.0 * x[k]);
}
BsInterpolate bs = new BsInterpolate(x, y);
double bsv = bs.Eval(0.23);
Console.Out.WriteLine("The computed B-spline value at point "
+ ".23 is " + bsv);
}
}
Output
The computed B-spline value at point .23 is -0.303418399276769
Link to C# source.