lsm_c_np: NP (class level)

Description Usage Arguments Details Value References See Also Examples

View source: R/lsm_c_np.R

Description

Number of patches (Aggregation metric)

Usage

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lsm_c_np(landscape, directions)

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

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

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

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

## S3 method for class 'list'
lsm_c_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_{i}

where n_{i} is the number of patches.

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

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_l_np

Examples

1

r-spatialecology/landscapemetrics documentation built on April 30, 2019, 6:01 a.m.