landscapemetrics (version 1.4.4)

lsm_c_pland: PLAND (class level)

Description

Percentage of landscape of class (Area and Edge metric)

Usage

lsm_c_pland(landscape, directions)
# S3 method for RasterLayer
lsm_c_pland(landscape, directions = 8)
# S3 method for RasterStack
lsm_c_pland(landscape, directions = 8)
# S3 method for RasterBrick
lsm_c_pland(landscape, directions = 8)
# S3 method for stars
lsm_c_pland(landscape, directions = 8)
# S3 method for list
lsm_c_pland(landscape, directions = 8)

Arguments

landscape

Raster* Layer, Stack, Brick or a list of rasterLayers.

directions

The number of directions in which patches should be connected: 4 (rook's case) or 8 (queen's case).

Value

tibble

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.

References

McGarigal, K., SA Cushman, and E Ene. 2012. FRAGSTATS v4: Spatial Pattern Analysis Program for Categorical and Continuous Maps. Computer software program produced by the authors at the University of Massachusetts, Amherst. Available at the following web site: http://www.umass.edu/landeco/research/fragstats/fragstats.html

See Also

lsm_c_ca, lsm_l_ta

Examples

# NOT RUN {
lsm_c_pland(landscape)

# }