| makeEOO {redlistr} | R Documentation |
Creates Extent of occurrence (EOO) Polygon
Description
makeEOO is a generic function that creates a minimum convex polygon
enclosing all occurrences of the provided spatial data. If the input provided
is a raster layer, the points are taken from a buffer that has the radius of
half of the shorter edge of the pixel around the centroid.
Usage
makeEOO(input.data)
Arguments
input.data |
Spatial object of an ecosystem or species distribution. Please use a CRS with units measured in metres. |
Value
An object of class SpatVect representing the EOO of
input.data. Also inherits its CRS.
Author(s)
Nicholas Murray murr.nick@gmail.com, Calvin Lee calvinkflee@gmail.com
References
Bland, L.M., Keith, D.A., Miller, R.M., Murray, N.J. and Rodriguez, J.P. (eds.) 2016. Guidelines for the application of IUCN Red List of Ecosystems Categories and Criteria, Version 1.0. Gland, Switzerland: IUCN. ix + 94pp. Available at the following web site: https://iucnrle.org/
See Also
Other EOO functions:
getAreaEOO()
Examples
library(terra)
crs.UTM55S <- '+proj=utm +zone=55 +south +ellps=WGS84 +datum=WGS84 +units=m +no_defs'
r1 <- rast(ifelse((volcano<130), NA, 1), crs = crs.UTM55S)
ext(r1) <- c(0, 6100, 0, 8700)
EOO.polygon <- makeEOO(r1)