circplot: Draw graphical elements in circular way

Description Usage Arguments Value Examples

Function comes in two flavors. Either it calculates the smallest angle [0, 180) or the anti-clockwise angle with respect to the second vector [0, 360).

1	vec_angles(a, b, rad = TRUE, mode = 1)

`a`	A matrix or a vector
`b`	A reference vector to find angle against.
`rad`	Angular measure is radian? (default `TRUE`).
`mode`	1= smallest angle in [0, 180); 2=anti-clockwise angle with respect vector b in [0, 360).

Vector of angles

v <- c(1,0)   # point vector

rad <- seq(0, 2*pi, length=10)    # radians to rotate
m <- cbind(cos(rad), sin(rad))    # 2d m matrix 

# mode 1: between 0 and 180 degrees, minimal angle / radian
vec_angles(v, c(1,0))
vec_angles(m, c(1,0))

# mode 2: between 0 and 360 degrees, anti-clockwise 
vec_angles(v, c(1,0), mode=2)
vec_angles(m, c(1,0), mode=2)