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landscapemetrics (version 1.5.6)

lsm_p_perim: PERIM (patch level)

Description

Perimeter (Area and edge metric))

Usage

lsm_p_perim(landscape, directions = 8)

Value

tibble

Arguments

landscape

Raster* Layer, Stack, Brick, SpatRaster (terra), stars, 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).

Details

$$PERIM = p_{ij}$$ where \(p_{ij}\) is the perimeter in meters.

PERIM is an 'Area and edge metric'. It equals the perimeter of the patch including also the edge to the landscape boundary. The metric describes patch area (larger perimeter for larger patches), but also patch shape (large perimeter for irregular shapes).

Units

Meters

Range

PERIM > 0

Behaviour

Increases, without limit, as patch size and complexity increases.

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: https://www.umass.edu/landeco/

Examples

Run this code
lsm_p_perim(landscape)

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