gridUncertaintyRandomManual helps determine the minimum number of area of
occupancy (AOO) grid cells occupied by a species or ecosystem. It varies the
location of the AOO grid by shifting in randomly in both x- and y-
axes, returning summary statistics for the range of AOOs calculated, and the
RasterLayer(s) containing the grids with the minimum AOO. Requires manual
input for the number of simulations to perform.
gridUncertaintyRandomManual(input.data, grid.size, n.sim = 10,
min.percent.rule = FALSE, percent = 1)Object of an ecosystem or species distribution. Accepts either raster or spatial points formats. Please use a CRS with units measured in metres.
A number specifying the width of the desired grid square (in same units as your coordinate reference system)
Specifies the number of random grids to be created and tested.
Logical. If TRUE, a minimum area threshold
must be passed before a grid is counted as an AOO grid.
Numeric. The minimum percent to be applied as a threshold for
the min.percent.rule.
List containing the following:
Data frame of summary statistics for the results
Data frame showing the distance shifted in x and y directions used to create the AOO grid(s) and their associated AOOs
List of RasterLayer(s) containing the AOO grid(s) which return the smallest AOO
Other gridUncertainty functions: gridUncertaintyBase,
gridUncertaintyRandom,
gridUncertaintyRestricted,
gridUncertaintySimulation,
gridUncertainty