rad: Rank-abundance data frame

In sads: Maximum Likelihood Models for Species Abundance Distributions

Rank-abundance data frame

Description

Creates a data frame with ranked abundances of rad-class from a vector of abundances, histogram, or fitted model object.

Usage

rad(x)

Arguments

x	a numerical vector of abundances or an histogram, or an object of class fitsad, fitrad or fitsadC.

Value

an object of rad-class, which is a data frame with two vectors:

rank	integer; abundance rank of each species (integer), from most abundant (rank=1) to the least abundant (rank=length(rank))
abund	numeric; abundance of each species

Author(s)

Paulo I. Prado [e-mail] and Murilo Dantas Miranda.

References

Whittaker, R. H. 1965, Dominance and Diversity in Land Plant Communities. Science, 147: 250–260.

See Also

rad-class for methods to create a rank-abundance data frame; radpred to get a rad-class object of predicted abundances from a theoretical distribution; fitsad-class , fitsadC-class and fitrad-class objects, from which you can also get an object of class rad; qqrad for quantile-quantile plots from a rad-class object, and pprad for percentile-percentile plots.

Examples

## rank-abundance plot
plot(rad(okland))

sads documentation built on June 22, 2024, 12:18 p.m.