Provides 2-dimensional points, spread uniformly over disc, or partial disc segment (i.e. a circle, or ring, or ring segment). Useful for e.g. building up clustering exercises.
Usage
simdesign_discunif(
r_min = 0,
r_max = 1,
angle_min = 0,
angle_max = 2 * pi,
name = "Uniform circle simulation design",
...
)Arguments
- r_min
Minimum radius of points.
- r_max
Maximum radius of points.
- angle_min
Minimum angle of points (between 0 and 2pi).
- angle_max
Maximum angle of points (between 0 and 2pi).
- name
Character, optional name of the simulation design.
- ...
Further arguments are passed to the
simdesignconstructor.
Value
List object with class attribute "simdesign_discunif" (S3 class), inheriting
from "simdesign". It contains the same entries as a simdesign
object but in addition the following entries:
r_minr_maxangle_minangle_max
Details
The distribution of points on a disk depends on the radius - the farther out, the more area the points need to cover. Thus, simply sampling two uniform values for radius and angle will not work. See references.
Examples
disc_sampler <- simdesign_discunif()
plot(simulate_data(disc_sampler, 1000, seed = 19))
ring_segment_sampler <- simdesign_discunif(r_min = 0.5, angle_min = 0.5 * pi)
plot(simulate_data(ring_segment_sampler, 1000, seed = 19))
circle_sampler <- simdesign_discunif(r_min = 1)
plot(simulate_data(circle_sampler, 1000, seed = 19))
