power: The power law SAR model

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

Description

s = c * a^z

Usage

data(power)

Format

The format is: List of 9 $ name : "Power" $ formula : expression(s == c * a^z) $ paramnumber: 2 $ parLim : "Rplus" "unif" $ fun : model function $ rssfun : Residual Sum of Squares function $ init : initial values calculation $ form : a formula object for further calculations

Details

The power SAR mdoel is convex non asymptotic. For further details and documentation please see the online documentation at http://mmsar.r-forge.r-project.org/

Source

Arrhenius (1921), Tjørve (2003).

References

Arrhenius, O. 1921. Species and area. Journal of Ecology. 9: 95-99.

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

Examples

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

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