Form factor/Compactness(vector data)

Calculate form factor or compactness

Usage

vm_l_comp_mn(landscape)

Arguments

landscape

the input landscape image,

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.

Details

Mean compactness across all patches in the landscape. Compactness is calculated as: $$COMPACT = \frac{4\pi A}{P^2}$$ where \(A\) is the patch area (m²) and \(P\) is the perimeter (m). Values range from 0 (linear) to 1 (circular).

References

Jiao, L., Liu, Y., & Li, H. (2012). Characterizing land-use classes in remote sensing imagery by shape metrics. ISPRS Journal of Photogrammetry and Remote Sensing, 72, 46–55. https://doi.org/10.1016/j.isprsjprs.2012.05.012

Examples

vm_l_comp_mn(vector_landscape)
#> # A tibble: 1 × 5
#>   level     class id    metric   value
#>   <chr>     <chr> <chr> <chr>    <dbl>
#> 1 landscape NA    NA    comp_mn 0.0422