asymp: The asymptotic SAR regression model

In fguilhaumon/mmSAR: mmSAR is an R package for the modelling of the Species-Area Relationship (SAR).

Usage

data(asymp)

Format

The format is: List of 8 $ name : "asymptotic regression" $ formula : expression(S == c - z * f^A) $ paramnumber: 3 $ paramnames : "c" "z" "f" $ parLim : "Rplus" "Rplus" "unif" $ fun : model function $ rssfun : Residual Sum of Squares function $ init : initial values calculation from Ratkowsky (1983) p178 $ form : a formula object for further calculations

Details

This model is convex asymptotic. Parameter c is the upper asymptote. For further details and documentation please see the online documentation at http://mmsar.r-forge.r-project.org/

Source

Tjorve (2003)

References

Ratkowsky, D.A. (1983) Nonlinear regression modelling: a unified approach. Marcel Dekker, New York.

Tjorve, E. (2003) Shapes and functions of species–area curves: a review of possible models. Journal of Biogeography, 30, 827–835.

See Also

rssoptim ; multiSAR ; power

Examples

#loading the asymp model object before using it
data(asymp)

fguilhaumon/mmSAR documentation built on May 30, 2019, 7:20 p.m.