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Calculate a least-cost path between one origin and one destination

Source: R/distance_time_polygons.R
calculate_lc_path.Rd

Compatibility wrapper around leastcostpath::create_lcp() that returns NULL when a path cannot be created.

Usage

calculate_lc_path(cs, origin, destination)

Arguments

cs

A leastcostpath conductance surface.

origin

Origin point.

destination

Destination point.

Value

A least-cost path object or NULL.

Examples

dem <- terra::rast(nrows = 5, ncols = 5, xmin = 0, xmax = 5, ymin = 0, ymax = 5,
  vals = 1, crs = "EPSG:3857")
cs <- make_conductance_surface(dem)
#> calculating slope...
#> Applying tobler cost function
origin <- terra::vect(data.frame(x = 0.5, y = 0.5), geom = c("x", "y"), crs = "EPSG:3857")
destination <- terra::vect(data.frame(x = 4.5, y = 4.5), geom = c("x", "y"), crs = "EPSG:3857")
calculate_lc_path(cs, origin, destination)
#> class       : SpatVector
#> geometry    : lines
#> dimensions  : 1, 3  (geometries, attributes)
#> extent      : 0.5, 4.5, 0.5, 4.5  (xmin, xmax, ymin, ymax)
#> coord. ref. : WGS 84 / Pseudo-Mercator
#> names       : costFunction fromCell toCell
#> type        :        <chr>    <num>  <num>
#> values      :       tobler       21      5