rcircle {SIMplyBee} | R Documentation |
Sample random points within a circle
Description
Level 0 function that samples random points (x, y) within a circle via rejection sampling.
Usage
rcircle(n = 1, radius = 1, uniform = TRUE, normScale = 1/3)
Arguments
n |
integer, number of samples points |
radius |
numeric, radius of the sampled circle |
uniform |
logical, should sampling be uniform or according to a bi-variate spherical (uncorrelated) Gaussian distribution (see examples) |
normScale |
numeric, if |
Value
matrix with two columns for the x and y coordinates of the points.
References
nubDotDev (2021) The BEST Way to Find a Random Point in a Circle https://youtu.be/4y_nmpv-9lI
Wolfram MathWorld (2023) Disk Point Picking https://mathworld.wolfram.com/DiskPointPicking.html
Examples
x <- rcircle(n = 500)
lim <- range(x)
plot(x, xlim = lim, ylim = lim, main = "Uniform")
x <- rcircle(n = 500, uniform = FALSE)
lim <- range(x)
plot(x, xlim = lim, ylim = lim, main = "Gaussian")
[Package SIMplyBee version 0.4.1 Index]