summarise: Summary function
Description
This function converts columns of an array (each representing community
counts) into proportions, so that each column sums to 1.
Usage
summarise(populations, normalise = TRUE)
Arguments
populations
An S x N array whose columns are counts of individuals.
normalise
Normalise probability distribution to sum to 1 for each
column rather than just along each set.
Value
Returns an array whose columns are proportions.