Mean number of disjunct core areas (Core area metric)
lsm_l_dcore_mn(landscape, directions, consider_boundary, edge_depth)# S3 method for RasterLayer
lsm_l_dcore_mn(
landscape,
directions = 8,
consider_boundary = FALSE,
edge_depth = 1
)
# S3 method for RasterStack
lsm_l_dcore_mn(
landscape,
directions = 8,
consider_boundary = FALSE,
edge_depth = 1
)
# S3 method for RasterBrick
lsm_l_dcore_mn(
landscape,
directions = 8,
consider_boundary = FALSE,
edge_depth = 1
)
# S3 method for stars
lsm_l_dcore_mn(
landscape,
directions = 8,
consider_boundary = FALSE,
edge_depth = 1
)
# S3 method for list
lsm_l_dcore_mn(
landscape,
directions = 8,
consider_boundary = FALSE,
edge_depth = 1
)
Raster* Layer, Stack, Brick or a list of rasterLayers.
The number of directions in which patches should be connected: 4 (rook's case) or 8 (queen's case).
Logical if cells that only neighbour the landscape boundary should be considered as core
Distance (in cells) a cell has the be away from the patch edge to be considered as core cell
tibble
$$DCORE_{MN} = mean(NCORE[patch_{ij}])$$ where \(NCORE[patch_{ij}]\) is the number of core areas.
DCORE_MN is an 'Core area metric'. It summarises the landscape as the mean of all patches in the landscape. A cell is defined as core if the cell has no neighbour with a different value than itself (rook's case). NCORE counts the disjunct core areas, whereby a core area is a 'patch within the patch' containing only core cells.
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
lsm_p_ncore
,
mean
,
lsm_c_dcore_mn
,
lsm_c_dcore_sd
,
lsm_c_dcore_cv
,
lsm_l_dcore_sd
,
lsm_l_dcore_cv
# NOT RUN {
lsm_l_dcore_mn(landscape)
# }
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