runif2: Generate randomly oriented vectors in 2D

In obreschkow/cooltools: Practical Tools for Scientific Computations and Visualizations

Generate randomly oriented vectors in 2D

Description

Generate randomly oriented vectors in 2D, following an isotropic distribution (optionally truncated to a region).

Usage

runif2(n = 1, r = c(0, 1), azimuth = c(0, 2 * pi), quasi = FALSE, start = 1)

Arguments

n	number of random vectors to be generated
r	2-vector specifying the range of radii
azimuth	2-vector specifying the range of azimuth angles
quasi	logical flag. If true, quasi-random numbers with low-discrepancy are drawn, based on a Halton sequence. Otherwise, the standard internal pseudo-random generator of runif() is used.
start	starting index of Halton sequence. Only used if quasi=TRUE.

Value

Returns an n-by-2 array of n vectors.

Author(s)

Danail Obreschkow

See Also

runif3

Examples

## generate 500 unit vectors with radii between 0.5 and 1
x = runif2(500,r=c(0.5,1))
oldpar = par(pty='s')
plot(x,pch=20)
par(oldpar)

obreschkow/cooltools documentation built on Nov. 16, 2024, 2:46 a.m.