arc {alphahull} | R Documentation |
Add an arc to a plot
Description
This function adds the arc of B(c,r) between the angles that A_theta v and A_{-theta} v form with the axis OX, where A_theta v represents the clockwise rotation of angle theta of the vector v.
Usage
arc(c, r, v, theta, ...)
Arguments
c |
Center c of the arc. |
r |
Radius r of the arc. |
v |
Vector v in the plane. |
theta |
Angle theta (in radians). |
... |
Arguments to be passed to methods, such as graphical parameters (see par ). |
See Also
plot.ahull
.
Examples
# Plot of the circumference of radius 1
theta<-seq(0,2*pi,length=100)
r<-1
plot(r*cos(theta),r*sin(theta),type="l")
# Add in red the arc between pi/4 and 3*pi/4
arc(c(0,0),1,c(0,1),pi/4,col=2,lwd=2)
[Package
alphahull version 0.1
Index]