producing knots from equations

[skiddy]

Im looking at producing knots from datum curves or points, but making sure both are written by equations



I have found the following image of a knot with a written equation, but i cant seem to apply it in pro engineer.



does anyone have any ideas???



Code from image:

r(beta)=0.8+1.6*sin(6*beta)

theta(beta)=2*beta

phi(beta)=0.6*pi*sin(12*beta)



View attachment 36



I found this equation



x=r*cos(phi)*cos(theta)

y=r*cos(phi)*sin(theta)

z=r*sin(phi)



which is supposedly you can form a whole family of knots which are formed by these equations



But i still cant apply this in pro engineer?



Any ideas??