Cubic spline interpolation

Constructs a cubic spline through given points. Points can be added by clicking on "Add point".

References

• http://en.wikipedia.org/wiki/Spline_interpolation

The underlying JavaScript code

        function addPoint() {
          p.push(board.createElement('point',[(Math.random()-0.5)*10,(Math.random()-0.5)*3],{style:6}));
          board.update();
        }