trait_model: Trait model for EasyABC tutorial

Description Details Examples


A stochastic individual-based model to demonstrate how the EasyABC functions can be used


This model is drawn from Jabot (2010) A stochastic dispersal-limited trait-based model of community dynamics. Journal of Theoretical Biology, 262, 650-661. It represents the stochastic dynamics of an ecological community where each species is represented by a set of traits (i.e. characteristics) which determine its competitive ability. The model requires four parameters: an immigration rate I, and three additional parameters (h, A and sigma) describing the way traits determine species competitive ability. The model additionnally requires two fixed variables: the total number of individuals in the local community J and the number of traits used n_t. The model outputs four summary statistics: the species richness of the community S, its Shannon's index H, the mean of the trait value among individuals MTV and the skewness of the trait value distribution STV. The simulation code trait_model reads sequentially J, I, A, n_t, h and sigma.



Example output

Loading required package: abc
Loading required package:
Loading required package: nnet
Loading required package: quantreg
Loading required package: SparseM

Attaching package: 'SparseM'

The following object is masked from 'package:base':


Loading required package: MASS
Loading required package: locfit
locfit 1.5-9.1 	 2013-03-22
[1]  390.000000    5.874554   43.289400 5299.524589

EasyABC documentation built on May 2, 2019, 2:40 p.m.