lsm_l_np: NP (landscape level)

Description Usage Arguments Details Value References See Also Examples

Description

Number of patches (Aggregation metric)

Usage

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lsm_l_np(landscape, directions)

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

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

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

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

## S3 method for class 'list'
lsm_l_np(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

NP = N

where N is the number of patches.

NP is an 'Aggregation metric'. It describes the fragmentation of the landscape, however, does not necessarily contain information about the configuration or composition of the landscape.

Units

None

Ranges

NP >= 1

Behaviour

Equals NP = 1 when only one patch is present and increases, without limit, as the number of patches increases

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_np

Examples

1

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