vm_l_prd.Rd
This function allows you to calculate the Patch richness density in a categorical landscape in vector data format, Patch richness density is diversity index
vm_l_prd(landscape, class_col)
the input landscape image,
the name of the class column of the input landscape
the returned calculated index is in column "value", and this function returns also some important information such as level and metric name, Moreover, class number and the "id" column, although both are "NA" here in the landscape level
vm_l_prd(vector_landscape, "class")
#> # A tibble: 1 × 5
#> level class id metric value
#> <chr> <chr> <chr> <chr> <dbl>
#> 1 landscape NA NA prd 3333.