Sim4: Gotelli's Sim4 Function

In jfq3/QsNullModels: My null model functions

Description

Randomizes a binary matrix m by shuffling elements within each row. Sampling weights for each column are proportional to column sums.

Usage

Sim4(m)

Arguments

m	A binary community matrix.

Details

Makes a call to VectorSample.

Value

A binary matrix randomized by columns and of the same dimensions as the input matrix.

Author(s)

Nicholas J. Gotelli. Help edited by John Quensen.

References

Gotelli, N. J. 2000. Null model analysis of species co-occurrence patterns. Ecology 81:2606-2621.

Examples

m <- sample(c(1,0), 50, replace=TRUE)
m <- matrix(m, 5, 10)
random.m <- Sim4(m)

jfq3/QsNullModels documentation built on April 6, 2020, 2:06 p.m.