distanceDecay: Distance-Decay Analysis

In spacc: Fast Spatial Species Accumulation Curves

Distance-Decay Analysis

Description

Analyze how species richness changes with distance from focal points.

Usage

distanceDecay(
  x,
  coords,
  n_seeds = 50L,
  breaks = NULL,
  distance = c("euclidean", "haversine"),
  progress = TRUE,
  seed = NULL
)

Arguments

x	A site-by-species matrix.
coords	A data.frame with x and y columns.
n_seeds	Integer. Number of focal points.
breaks	Numeric vector. Distance thresholds. Default auto-calculated.
distance	Character. Distance method.
progress	Logical. Show progress?
seed	Integer. Random seed.

Value

An object of class spacc_decay with distance-species relationships.

References

Nekola, J.C. & White, P.S. (1999). The distance decay of similarity in biogeography and ecology. Journal of Biogeography, 26, 867-878.

Soininen, J., McDonald, R. & Hillebrand, H. (2007). The distance decay of similarity in ecological communities. Ecography, 30, 3-12.

spacc documentation built on June 20, 2026, 5:07 p.m.