Perimeter-Area ratio.

This function allows you to calculate the ratio between the patch perimeter and area. The ratio describes the patch complexity in a straightforward way.

Usage

vm_p_perarea(landscape, class_col = NULL, patch_col = NULL)

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

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_perarea(vector_patches, "class", "patch")
#> # A tibble: 40 × 5
#>    level class id    metric  value
#>    <chr> <chr> <chr> <chr>   <dbl>
#>  1 patch 1     11    perarea 1.15 
#>  2 patch 1     12    perarea 0.789
#>  3 patch 1     13    perarea 1.2  
#>  4 patch 1     14    perarea 2.5  
#>  5 patch 1     15    perarea 4    
#>  6 patch 1     16    perarea 4    
#>  7 patch 1     17    perarea 4    
#>  8 patch 1     18    perarea 1.67 
#>  9 patch 1     19    perarea 4    
#> 10 patch 1     20    perarea 4    
#> # ℹ 30 more rows