Create empty Area of Occupancy (AOO) Grid.

createGrid produces empty grid which can be used as the basis to help compute AOO.

Usage

createGrid(input.data, grid.size = 10000)

Arguments

input.data

Spatial object (sf or SpatRaster) of an ecosystem or species distribution. Please use a CRS with units measured in metres.

grid.size

A number specifying the width of the desired grid square (in same units as your coordinate reference system)

Value

A regular grid raster with extent input.data expanded by two cells in each direction and grid size grid.size. Each grid square has a unique raster value that serves as its identification number.

References

IUCN 2024. Guidelines for the application of IUCN Red List of Ecosystems Categories and Criteria, Version 2.0. Keith, D.A., Ferrer-Paris, J.R., Ghoraba, S.M.M., Henriksen, S., Monyeki, M., Murray, N.J., Nicholson, E., Rowland, J., Skowno, A., Slingsby, J.A., Storeng, A.B., Valderrábano, M. & Zager, I. (Eds.) Gland, Switzerland: IUCN. ix + 94pp. https://doi.org/10.2305/CJDF9122

See also

Other AOO functions: getAOO(), jplot(), makeAOOGrid(), top_pct()

Author

Nicholas Murray murr.nick@gmail.com, Calvin Lee calvinkflee@gmail.com, Aniko B. Toth anikobtoth@gmail.com