Core area index(vector data) — vm_p

This function allows you to calculate the ratio of the core area and the area in square meters. Core area is defined as an area that within the patch and its edge is a fixed value from the boundary of the patch. The index describes the percentage of a patch that is core area.

vm_p_cai(landscape, class_col = NULL, patch_col = NULL, edge_depth)

Arguments

landscape: the input landscape image,
class_col: the name of the class column of the input landscape
patch_col: the name of the id column of the input landscape
edge_depth: the fixed distance to the edge of the patch

Value

the function returns tibble with the calculated values in column "value", this function returns also some important information such as level, class, patch id and metric name.

Examples

vm_p_cai(vector_patches, "class", "patch", edge_depth = 0.8)
#> # A tibble: 40 × 5
#>    level class id    metric value
#>    <chr> <chr> <chr> <chr>  <dbl>
#>  1 patch 1     11    cai    30.1 
#>  2 patch 1     12    cai    47.0 
#>  3 patch 1     13    cai    25.2 
#>  4 patch 1     14    cai     0   
#>  5 patch 1     15    cai     0   
#>  6 patch 1     16    cai     0   
#>  7 patch 1     17    cai     0   
#>  8 patch 1     18    cai     9.33
#>  9 patch 1     19    cai     0   
#> 10 patch 1     20    cai     0   
#> # ℹ 30 more rows