Landscape: Landscape generators

In andrechalom/TWoLifR: An R library For Agent-Based Simulations of Demography in Heterogeneus Landscapes

Description

This function generates a landscape object, which represent a fragmented environment in which the simulations will run.

Usage

Landscape(numb.cells = 100, type = c("random", "blob", "fahrig", "disc"),
  bound.condition = c("absorptive", "periodical", "reflexive"), cover = 1,
  frag = NULL)

## S3 method for class 'landscape'
plot(x, col1 = "darkgreen", col2 = "grey70", ...)

total.N(landscape)

Arguments

numb.cells	integer. Represents both the lenght AND width of the landscape, so numb.cells=100 creates a 100x100 landscape
type	character. Currently, three types of habitat fragmentation routines are implemented: random fragmentation (noise), contiguous blob removal (random walk removal) and Fahrig fragmentation. Also, you can specify "disc" to create a landscape that is close to a circular disc; in this case, the disc is fully made of habitat and the parameter cover is ignored.
bound.condition	character. Control what is the boundary condition. This parameter have no effect on the actual landscape generated, but will be passed to the simulation.
cover	numerical, between 0 and 1. What fraction of the landscape should consist on habitat?
frag	fragmentation parameter for the Fahrig method. Is ignored for other types. Higher values are close to random noise, while lower values result in more realistic landshapes.
x	a landscape object
col1	habitat color
col2	non-habitat color
landscape	a landscape object
...	further arguments for plotting functions

Examples

plot(Landscape(cover=0.7, type="f", frag=0.01))

andrechalom/TWoLifR documentation built on May 12, 2019, 3:34 a.m.