smooth
smooth — smoothing by spline functions
Calling sequence
[pt]=smooth(ptd [,step])
Parameters
| ptd | : (2xn) real vector |
| step | : real (discretization step of abscissae) |
| pt | : (2xn) real vector |
Description
this function computes interpolation by spline
functions for a given set of points in the plane.
The coordinates are (ptd(1,i),ptd(2,i)). The
components ptd(1,:) must be in ascending order.
The default value for the step is
abs(maxi(ptd(1,:))-mini(ptd(1,:)))/100
Examples
x=[1 10 20 30 40];
y=[1 30 -10 20 40];
plot2d(x',y',[3],"011"," ",[-10,-40,50,50]);
yi=smooth([x;y],0.1);
plot2d(yi(1,:)',yi(2,:)',[1],"000");
See also
splin, interp, interpln
