create_accum_cost: creates an accumulated cost surface

In josephlewis/leastcostpath: Modelling Pathways and Movement Potential Within a Landscape

creates an accumulated cost surface

Description

Creates an accumulated cost surfaces from one or more origins

Usage

create_accum_cost(
  x,
  origins,
  FUN = mean,
  rescale = FALSE,
  check_locations = FALSE
)

Arguments

x	SpatRaster
origins	sf 'POINT' or 'MULTIPOINT', SpatVector, data.frame or matrix containing the origins coordinates. If multiple origins are supplied then the multiple accumulated cost surfaces will be summarised using the FUN argument
FUN	function Apply a function to the cells of a SpatRaster. Default applied function is 'mean'. See terra::app() for more information
rescale	logical. if TRUE, values scaled to between 0 and 1. FALSE (default)
check_locations	logical if TRUE checks if origins are traversable. FALSE (default)

Value

SpatRaster

Author(s)

Joseph Lewis

Examples

r <- terra::rast(system.file("extdata/SICILY_1000m.tif", package="leastcostpath"))

slope_cs <- create_slope_cs(x = r, cost_function = "tobler", neighbours = 4)

locs <- sf::st_sf(geometry = sf::st_sfc(
sf::st_point(c(839769, 4199443)),
sf::st_point(c(1038608, 4100024)),
sf::st_point(c(907695, 4145478)),
crs = terra::crs(r)))

cc <- create_accum_cost(x = slope_cs, origins = locs, FUN = mean, rescale = FALSE)

josephlewis/leastcostpath documentation built on Oct. 18, 2023, 2:03 p.m.