View source: R/lsm_l_area_mn.R
lsm_l_area_mn | R Documentation |
Mean of patch area (Area and edge metric)
lsm_l_area_mn(landscape, directions = 8)
landscape |
Raster* Layer, Stack, Brick, SpatRaster (terra), stars, 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). |
AREA_{MN} = mean(AREA[patch_{ij}])
where AREA[patch_{ij}]
is the area of each patch in hectares
AREA_MN is an 'Area and Edge metric'. The metric summarises the landscape
as the mean of all patch in the landscape. The metric is a simple way
to describe the composition of the landscape. Especially together with the total
landscape area (lsm_l_ta
), it can also give an an idea of patch structure
(e.g. many small patches vs. few larges patches).
Hectares
AREA_MN > 0
Approaches AREA_MN = 0 if all patches are small. Increases, without limit, as the patch areas increase.
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: https://www.umass.edu/landeco/
lsm_p_area
,
mean
,
lsm_c_area_mn
,
lsm_c_area_sd
,
lsm_c_area_cv
lsm_l_area_sd
,
lsm_l_area_cv
lsm_l_area_mn(landscape)
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