Question

USING MATLAB

Develop a computer program to perform Cubic spline interpolation. The input for the computer program will be the data points, the point(s) that is (are) required to be interpolated. Test your program by solving part d of the previous problem

Answer 1

program:

x = [0 1 2 5 3 6 0 7 8 10]; %x is vector of data point's x values i.e x1,x2,x3
y = [1 2 3 6 4 7 1 8 9 11]; %y is vector of data point's y values i.e y1,y2,y3
xx = 0: .5 : 10;
pp = spline(x,y,xx);
plot(x,y,xx,pp);

Output:

12 10 8 6 4 0 10