lsm_c_pland: PLAND (class level)

In landscapemetrics: Landscape Metrics for Categorical Map Patterns

PLAND (class level)

Description

Percentage of landscape of class (Area and Edge metric)

Usage

lsm_c_pland(landscape, directions = 8)

Arguments

landscape	A categorical raster object: SpatRaster; Raster* Layer, Stack, Brick; stars or a list of SpatRasters.
directions	The number of directions in which patches should be connected: 4 (rook's case) or 8 (queen's case).

Details

PLAND = \frac{\sum \limits_{j = 1}^{n} a_{ij}} {A} * 100

where a_{ij} is the area of each patch and A is the total landscape area.

PLAND is an 'Area and edge metric'. It is the percentage of the landscape belonging to class i. It is a measure of composition and because of the relative character directly comparable among landscapes with different total areas.

Units

Percentage

Range

0 < PLAND <= 100

Behaviour

Approaches PLAND = 0 when the proportional class area is decreasing. Equals PLAND = 100 when only one patch is present.

Value

tibble

References

McGarigal K., SA Cushman, and E Ene. 2023. FRAGSTATS v4: Spatial Pattern Analysis Program for Categorical Maps. Computer software program produced by the authors; available at the following web site: https://www.fragstats.org

See Also

lsm_c_ca, lsm_l_ta

Examples

landscape <- terra::rast(landscapemetrics::landscape)
lsm_c_pland(landscape)

landscapemetrics documentation built on Oct. 3, 2023, 5:06 p.m.