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lsm_c_te

TE (class level)

Description

Total (class) edge (Area and Edge metric)

Usage

lsm_c_te(landscape, count_boundary = FALSE, directions = 8)

Arguments

landscape

Raster* Layer, Stack, Brick, SpatRaster (terra), stars, or a list of rasterLayers.
count_boundary

Include landscape boundary in edge length
directions

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

Details

TE = ∑ \limits_{k = 1}^{m} e_{ik}

where e_{ik} is the edge lengths in meters. TE is an 'Area and edge metric'. Total (class) edge includes all edges between class i and all other classes k. It measures the configuration of the landscape because a highly fragmented landscape will have many edges. However, total edge is an absolute measure, making comparisons among landscapes with different total areas difficult. If cound_boundary = TRUE also edges to the landscape boundary are included.

Units

Meters

Range

TE >= 0

Behaviour

Equals TE = 0 if all cells are edge cells. Increases, without limit, as landscape becomes more fragmented

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

Examples

lsm_c_te(landscape)
landscapemetrics

Landscape Metrics for Categorical Map Patterns

v1.5.2
GPL-3
Authors
Maximillian H.K. Hesselbarth [aut, cre] (<https://orcid.org/0000-0003-1125-9918>), Marco Sciaini [aut] (<https://orcid.org/0000-0002-3042-5435>), Jakub Nowosad [aut] (<https://orcid.org/0000-0002-1057-3721>), Sebastian Hanss [aut] (<https://orcid.org/0000-0002-3990-4897>), Laura J. Graham [ctb] (Input on package structure), Jeffrey Hollister [ctb] (Input on package structure), Kimberly A. With [ctb] (Input on package structure), Florian Privé [ctb] (Original author of underlying C++ code for get_nearestneighbour() function), Project Nayuki [ctb] (Original author of underlying C++ code for get_circumscribingcircle and lsm_p_circle), Matt Strimas-Mackey [ctb] (Bugfix in sample_metrics())
Initial release

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