spline(<x_data>, <y_data>, <query_points>) 

% MATLAB program spline data interpolation
  x = [1,3,5,7,9];
  y = sin(x);
  query = [0.5,pi,1.37];
  spline(x, y, query)

% MATLAB program for the interpolated data.
  query = 0:11;
  x = [1,3,5,7,9];
  y = (x.^3) - (x.^2) + (x.^-1);
  yx = spline(x, y, query);
  plot(x, y, 'o', query, yx)