niche.runif: Uniform sampling from an elliptical niche region.

In nicheROVER: Niche Region and Niche Overlap Metrics for Multidimensional Ecological Niches

Uniform sampling from an elliptical niche region.

Description

Uniform sampling from an elliptical niche region.

Usage

niche.runif(n, mu, Sigma, alpha = 0.95)

Arguments

n	Number of random draws.
mu	Mean vector.
Sigma	Variance matrix.
alpha	Probabilistic niche size

Value

IID draws from a uniform distribution on the elliptical niche region.

See Also

ellipse() and niche.size() for the definition of the elliptical niche region.

Examples

# 2d example
d <- 2 # number of dimensions
V <- crossprod(matrix(rnorm(4),d,d))
mu <- rnorm(d)
plot(ellipse(mu, V), type = "l")
points(niche.runif(1e4, mu, V), col = "brown", pch = ".")

nicheROVER documentation built on Oct. 13, 2023, 5:10 p.m.