Total area (Area and edge metric)

## Usage

lsm_l_ta(landscape, directions = 8)

## Arguments

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).

tibble

## Details

$$CA = sum(AREA[patch_{ij}])$$ where $$AREA[patch_{ij}]$$ is the area of each patch in hectares.

TA is an 'Area and edge metric'. The total (class) area sums the area of all patches in the landscape. It is the area of the observation area.

Hectares

TA > 0

### Behaviour

Approaches TA > 0 if the landscape is small and increases, without limit, as the size of the landscape increases.

## 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

lsm_p_area, sum,
lsm_c_ca
lsm_l_ta(landscape)