Calculate Niche Overlap (Schoener's D)

Computes the overlap between two distributions.

Usage

calc_niche_overlap(x, y, n = 512)

Arguments

x

Numeric vector (e.g., predictions or spatial fold values).

y

Numeric vector (e.g., observations or background values).

n

Numeric. Number of points for density estimation. Default 512.

Value

Numeric value between 0 and 1.

References

Schoener TW. The Anolis Lizards of Bimini: Resource Partitioning in a Complex Fauna. Ecology(1968) 49:704–726. doi:10.2307/1935534 .

Examples

if (FALSE) { # \dontrun{
library(isdmtools)

# Create two identical distributions (should have high overlap)
v1 <- rnorm(1000, mean = 10, sd = 1)
v2 <- rnorm(1000, mean = 10, sd = 1)
overlap_high <- calc_niche_overlap(v1, v2)

# Create two divergent distributions (should have low overlap)
v3 <- rnorm(1000, mean = 20, sd = 1)
overlap_low <- calc_niche_overlap(v1, v3)
} # }