plusMinus: Positive and negative associations

View source: R/plusMinus.R

plusMinusR Documentation

Positive and negative associations

Description

Calculate positive and negative associations based on Schoener similarity

Usage

plusMinus(x, alpha = 0.05, B = 999)

Arguments

x

site by species matrix (sites as rows, species as columns, abundances in cells)

alpha

the significance level

B

number of replicates for the null model permutations

Details

Faster implementation of the funciton pos.neg.abun.r2d from ((citation)) that also only returns information relevant to testing the association of abundance and different types of connectivity (plus and minus).

Value

an ncol(x) by ncol(x) matrix of species-species similarities

Author(s)

Andy Rominger <ajrominger@gmail.com>


ajrominger/ssadAssociation documentation built on Sept. 29, 2023, 4:43 a.m.