create_barrier_cs: Create barrier cost surface

In movecost: Calculation of Slope-Dependant Accumulated Cost Surface, Least-Cost Paths, Least-Cost Corridors, Least-Cost Networks Related to Human Movement Across the Landscape

Create barrier cost surface

Description

Creates a cost surface that incorporates barriers that inhibit movement in the landscape.

Usage

create_barrier_cs(raster, barrier, neighbours = 16, field = 0, background = 1)

Arguments

raster	RasterLayer (raster package). The Resolution, Extent, and Spatial Reference System of the provided RasterLayer is used when creating the resultant Barrier Cost Surface.
barrier	Spatial* (sp package) or RasterLayer (raster package). Area within the landscape that movement is inhibited.
neighbours	Number of directions used in the Least Cost Path calculation.
background	Value assigned to cells that do not coincide with the Spatial* or RasterLayer object. Default is numeric value 1.
fields	Value assigned to cells that coincide with the barrier Spatial* or RasterLayer object. Default is numeric value 0.

Details

The resultant Barrier Cost Surface is produced by assessing which areas of the raster coincide with the Spatial* or RasterLayer object as specified in the barrier argument. The areas of the raster that coincide with the barrier are given a conductance value of 0 (default value, with all other areas given a Conductance value of 1 (default value). The conductance value of 0 ensures that movement is inhibited within these areas. Examples of use include rivers, altitudes, and taboo areas. If a RasterLayer object is supplied in the barrier argument then all cells with a value NOT NA will be used as the barrier.

Value

TransitionLayer (gdistance package) numerically expressing the barriers to movement in the landscape. The resultant TransitionLayer can be incorporated with other TransitionLayer through Raster calculations.

movecost documentation built on April 12, 2023, 12:37 p.m.