vm_c_square_mn.RdCalculate squareness
vm_c_square_mn(landscape, class_col)the input landscape image,
the name of the class column of the input landscape
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 between perimeter of equal-area square of shape and perimeter of shape
Basaraner, M., & Cetinkaya, S. (2017). Performance of shape indices and classification schemes for characterising perceptual shape complexity of building footprints in GIS. International Journal of Geographical Information Science, 31(10), 1952–1977. https://doi.org/10.1080/13658816.2017.1346257
vm_c_square_mn(vector_landscape, "class")
#> # A tibble: 3 × 5
#> level class id metric value
#> <chr> <chr> <chr> <chr> <dbl>
#> 1 class 1 NA sq_mn 0.223
#> 2 class 2 NA sq_mn 0.237
#> 3 class 3 NA sq_mn 0.235