smooth

Arguments

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(max(ptd(1,:))-min(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 — cubic spline interpolation
• interp — cubic spline evaluation function
• interpln — linear interpolation