vm_p_coh.RdCalculate Cohesion Index
vm_p_coh(landscape, class_col = NULL, patch_col = NULL, n = 1000)the input landscape image,
the name of the class column of the input landscape
the name of the id column of the input landscape
number of grid points to generate
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.
ratio of the average distance-squared among all points in an equal-area circle and the average distance-squared among all points in the shape
Angel, S., Parent, J., & Civco, D. L. (2010). Ten compactness properties of circles: Measuring shape in geography: Ten compactness properties of circles. The Canadian Geographer / Le Géographe Canadien, 54(4), 441–461. https://doi.org/10.1111/j.1541-0064.2009.00304.x
vm_p_coh(vector_landscape, class_col = "class", n = 1000)
#> # A tibble: 3 × 5
#> level class id metric value
#> <chr> <chr> <chr> <chr> <dbl>
#> 1 patch 1 1 coh_idx 0.444
#> 2 patch 2 2 coh_idx 0.622
#> 3 patch 3 3 coh_idx 0.760