| rad {sads} | R Documentation |
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
|
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 , 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))