Description Usage Arguments Value References See Also Examples

Number of core areas (Core area metric)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | ```
lsm_p_ncore(landscape, directions, consider_boundary, edge_depth)
## S3 method for class 'RasterLayer'
lsm_p_ncore(landscape, directions = 8,
consider_boundary = FALSE, edge_depth = 1)
## S3 method for class 'RasterStack'
lsm_p_ncore(landscape, directions = 8,
consider_boundary = FALSE, edge_depth = 1)
## S3 method for class 'RasterBrick'
lsm_p_ncore(landscape, directions = 8,
consider_boundary = FALSE, edge_depth = 1)
## S3 method for class 'stars'
lsm_p_ncore(landscape, directions = 8,
consider_boundary = FALSE, edge_depth = 1)
## S3 method for class 'list'
lsm_p_ncore(landscape, directions = 8,
consider_boundary = FALSE, edge_depth = 1)
``` |

`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). |

`consider_boundary` |
Logical if cells that only neighbour the landscape boundary should be considered as core |

`edge_depth` |
Distance (in cells) a cell has the be away from the patch edge to be considered as core cell #' @details
where NCORE is a 'Core area metric'. A cell is defined as core if the cell has no neighbour with a different value than itself (rook's case). The metric counts the disjunct core areas, whereby a core area is a 'patch within the patch' containing only core cells. It describes patch area and shape simultaneously (more core area when the patch is large, however, the shape must allow disjunct core areas). Thereby, a compact shape (e.g. a square) will contain less disjunct core areas than a more irregular patch. ## UnitsNone ## RangeNCORE >= 0 ## BehaviourNCORE = 0 when CORE = 0, i.e. every cell in patch is edge. Increases, without limit, as core area increases and patch shape allows disjunct core areas (i.e. patch shape becomes rather complex). |

tibble

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_c_dcore_mn`

,
`lsm_c_dcore_sd`

,
`lsm_c_dcore_cv`

,
`lsm_c_ndca`

,

`lsm_l_dcore_mn`

,
`lsm_l_dcore_sd`

,
`lsm_l_dcore_cv`

,
`lsm_l_ndca`

1 |

Embedding an R snippet on your website

Add the following code to your website.

For more information on customizing the embed code, read Embedding Snippets.