View source: R/AOO_functions.R
makeAOOGrid | R Documentation |
makeAOOGrid
is a generic function that creates grids representing the
area of occupancy for distributions based on the input spatial data. It
includes capability for specifying whether a minimum percent of the grid cell
needs to be occupied before it is counted in the AOO. This functionality is
important for assessing the IUCN Red List of Ecosystems Criteria B.
makeAOOGrid(input.data, grid.size, min.percent.rule = FALSE, percent = 1)
input.data |
Spatial object 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) |
min.percent.rule |
Logical. If |
percent |
Numeric. The minimum percent to be applied as a threshold for
the |
A shapefile of grid cells occupied by an ecosystem or species
Nicholas Murray murr.nick@gmail.com, Calvin Lee calvinkflee@gmail.com
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/
Other AOO functions:
createGrid()
,
getAOOSilent()
,
getAOO()
crs.UTM55S <- '+proj=utm +zone=55 +south +ellps=WGS84 +datum=WGS84 +units=m +no_defs'
r1 <- raster(ifelse((volcano<130), NA, 1), crs = crs.UTM55S)
extent(r1) <- extent(0, 6100, 0, 8700)
AOO_grid <- makeAOOGrid(r1, 1000, min.percent.rule = TRUE, percent = 1)
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.