dot-calcTol: Automatically calculate tolerance for null model point...
In adamlilith/enmSdm: Tools for Modeling Niches and Distributions of Species

.calcTol

R Documentation

Automatically calculate tolerance for null model point randomization

Description

This function takes a triangular or rectangular distance matrix representing pairwise distances between points and calculates a tolerance value for spatial randomizations of points meant to reflect the spatial autocorrelation inherent in the observed points. It is meant as a helper function for the family of randPoints--- functions.

Usage

.calcTol(dists, removeTopRow)

Arguments

`dists`	Either a lower-triangular square matrix (with the diagonal set to `NA`) or a rectangular matrix. Values represent pairwise distances between points.
`removeTopRow`	Logical, if `TRUE` then remove the top row of the `dists` matrix before calculating summary statistics. If the matrix is lower-triangular and the diagonal is `NA` then retaining the top row will cause a warning. This value should be `FALSE` if `dists` is a rectangular matrix or otherwise not triangular!