get_boundaries function

get_boundaries

Get boundary cells of patches

get_boundaries(
  landscape,
  consider_boundary = FALSE,
  edge_depth = 1,
  as_NA = FALSE,
  patch_id = FALSE,
  return_raster = TRUE
)

Arguments

• landscape: SpatRaster or matrix.
• consider_boundary: Logical if cells that only neighbour the landscape boundary should be considered as edge.
• edge_depth: Distance (in cells) a cell has the be away from the patch edge to be considered as core cell.
• as_NA: If true, non-boundary cells area labeld NA.
• patch_id: If true, boundary/edge cells are labeled with the original patch id.
• return_raster: If false, matrix is returned.

Returns

List with SpatRaster or matrix

Details

All boundary/edge cells are labeled 1, all non-boundary cells 0. NA values are not changed. Boundary cells are defined as cells that neighbour either a NA cell or a cell with a different value than itself. Non-boundary cells only neighbour cells with the same value than themself.

Examples

landscape <- terra::rast(landscapemetrics::landscape)
class_1 <- get_patches(landscape, class = 1)[[1]][[1]]

get_boundaries(class_1)
get_boundaries(class_1, return_raster = FALSE)