anglesArc {alphahull} | R Documentation |
Angles of the extremes of an arc
Description
Given a vector v and an angle theta, anglesArc
returns 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
anglesArc(v, theta)
Arguments
v |
Vector v in the plane. |
theta |
Angle theta (in radians). |
Details
The angle that forms the vector v with the axis OX takes its value in [0,2π).
Value
angs |
Numeric vector with two components. |
Examples
# Let v=c(0,1) and theta=pi/4
# Consider the arc such that v is the internal angle bisector that
# divides the angle 2*theta into two equal angles
# The angles that the arc forms with the OX axis are pi/4 and 3*pi/4
v<-c(0,1)
theta<-pi/4
anglesArc(v,theta)
[Package
alphahull version 0.1
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