lsm_c_pland: PLAND (class level)

Description Usage Arguments Details Value References See Also Examples

Description

Percentage of landscape of class (Area and Edge metric)

Usage

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lsm_c_pland(landscape, directions)

## S3 method for class 'RasterLayer'
lsm_c_pland(landscape, directions = 8)

## S3 method for class 'RasterStack'
lsm_c_pland(landscape, directions = 8)

## S3 method for class 'RasterBrick'
lsm_c_pland(landscape, directions = 8)

## S3 method for class 'stars'
lsm_c_pland(landscape, directions = 8)

## S3 method for class '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).

Details

PLAND = \frac{∑ \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. 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

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r-spatialecology/landscapemetrics documentation built on May 20, 2019, noon