The goal of roads is to simulate road development under resource development scenarios.
You can install the released version of roads from CRAN with:
install.packages("roads")And the development version from GitHub with:
# install.packages("devtools")
devtools::install_github("LandSciTech/roads")To simulate the development of roads three inputs are needed: the
current road network (roads), the locations that should be connected to
the road network (landings) and the cost of building roads across the
landscape (cost). Typically the roads and landings are sf
objects or sp Spatial* objects and the cost is a
raster.
library(roads)
library(raster)
#> Warning: package 'sp' was built under R version 4.2.3
# data set installed with roads package
demoScen <- prepExData(demoScen)
scen <- demoScen[[1]]
prRoads <- projectRoads(landings = scen$landings.points,
cost = scen$cost.rast,
roads = scen$road.line,
plotRoads = TRUE) 
By default projectRoads uses a minimum spanning tree
with least cost paths algorithm (roadMethod = "mst") to
connect all landings to the nearest existing road or other landing
following the path with the lowest cost. Other methods available are
least cost path (roadMethod = "lcp") which connects each
landing to the nearest road via the least cost path but independent of
other landings and snapping (roadMethod = "snap") which
ignores both cost and other landings and simply connects each landing to
the nearest road “as the crow flies”
For more details on how to use the package see the vignette
vignette("roads-vignette", package = "roads")
Copyright (C) 2021 Her Majesty the Queen in Right of Canada, as represented by the Minister of Environment and Climate Change.
And
Copyright 2018 Province of British Columbia
Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at
https://www.apache.org/licenses/LICENSE-2.0
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