Description Usage Arguments Details Value References See Also Examples

View source: R/lsm_l_shape_cv.R

Covariance of variation shape index (Shape metric)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | ```
lsm_l_shape_cv(landscape, directions)
## S3 method for class 'RasterLayer'
lsm_l_shape_cv(landscape, directions = 8)
## S3 method for class 'RasterStack'
lsm_l_shape_cv(landscape, directions = 8)
## S3 method for class 'RasterBrick'
lsm_l_shape_cv(landscape, directions = 8)
## S3 method for class 'stars'
lsm_l_shape_cv(landscape, directions = 8)
## S3 method for class 'list'
lsm_l_shape_cv(landscape, directions = 8)
``` |

`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). |

*SHAPE_{CV} = cv(SHAPE[patch_{ij}])*

where *SHAPE[patch_{ij}]* is the shape index of each patch.

SHAPE_CV is a 'Shape metric'. The landscape is summarised as the Coefficient of variation of all patches in the landscape. SHAPE describes the ratio between the actual perimeter of the patch and the hypothetical minimum perimeter of the patch. The minimum perimeter equals the perimeter if the patch would be maximally compact.

None

SHAPE_CV >= 0

Equals SHAPE_CV = 0 if all patches have an identical shape index. Increases, without limit, as the variation of the shape index increases.

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

Patton, D. R. 1975. A diversity index for quantifying habitat "edge". Wildl. Soc.Bull. 3:171-173.

`lsm_p_shape`

,
`cv`

,

`lsm_c_shape_mn`

,
`lsm_c_shape_sd`

,

`lsm_c_shape_cv`

,
`lsm_l_shape_mn`

,
`lsm_l_shape_sd`

1 |

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

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.