R: Rank-abundance data frame

rad {sads} | R Documentation

## Rank-abundance data frame

### Description

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

### Usage

    rad(x)

### Arguments

`x` | a numerical vector of abundances or an object of class `fitsad` or `fitrad`.

### 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 prado@ib.usp.br 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` 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))

[Package sads version 0.4.2 Index]