Centroid of patches
Usage
get_centroids(
landscape,
directions = 8,
cell_center = FALSE,
return_vec = FALSE,
verbose = TRUE
)Arguments
- landscape
A categorical raster object: SpatRaster; Raster* Layer, Stack, Brick; stars or a list of SpatRasters.
- directions
The number of directions in which patches should be connected: 4 (rook's case) or 8 (queen's case).
- cell_center
If true, the coordinates of the centroid are forced to be a cell center within the patch.
- return_vec
If true, a sf object is returned.
- verbose
Print warning messages
Details
Get the coordinates of the centroid of each patch. The centroid is by default
defined as the mean location of all cell centers. To force the centroid to be
located within each patch, use the cell_center argument. In this case, the
centroid is defined as the cell center that is the closest to the mean location.
Examples
# get centroid location
landscape <- terra::rast(landscapemetrics::landscape)
get_centroids(landscape)
#> Warning: Double values will be converted to integer.
#> # A tibble: 28 × 6
#> layer level class id x y
#> <int> <chr> <int> <int> <dbl> <dbl>
#> 1 1 patch 1 1 0.5 29.5
#> 2 1 patch 1 2 0.7 20.9
#> 3 1 patch 1 3 7.86 12.0
#> 4 1 patch 1 4 5.5 0.5
#> 5 1 patch 1 5 11.5 3.5
#> 6 1 patch 1 6 19.2 23.2
#> 7 1 patch 1 7 16.9 8.19
#> 8 1 patch 1 8 20.5 0.833
#> 9 1 patch 1 9 26.1 2.3
#> 10 1 patch 2 10 2.65 25.1
#> # ℹ 18 more rows