species: Create a species

In SiMRiv: Simulating Multistate Movements in River/Heterogeneous Landscapes

Create a species

Description

Creates a species, characterized by one or more behavioral states, to be simulated with function simulate.

Usage

  species(states, trans = transitionMatrix(), name = "<unnamed>"
    , resistanceMap = NULL)

Arguments

states	a list of states characterizing the behavior of the species, or a single state, for simple movements
trans	a square state transition matrix, defining the probability of changing between states. For convenience, use the function transitionMatrix. Can be omitted if this species has a single-state movement.
name	the name of the species
resistanceMap	not used. Will be implemented in future versions.

Details

The rows and columns of the transition matrix correspond in the same order to the list of states. The matrix is not symmetric, and is read along the rows, i.e. the probability of changing from state 2 to state 1 is located in row 2, column 1; hence rows must sum to 1 but columns not.

Value

An object of class species.

See Also

simulate, perceptualRange, state, transitionMatrix, Arith-methods.

Examples

## example from 'simulate'

## note: perceptual range radii and step lengths must be
## adequate to the raster resolution!

LevyWalker <- species(
	(state.RW() * 100 + 10) + (state.CRW(0.97) * 500 + 20)
, transitionMatrix(0.005, 0.001))

SiMRiv documentation built on Sept. 15, 2023, 5:07 p.m.