randomPts: Generate random points within a raster object.
In BigelowLab/rasf: rasf
randomPts R Documentation
Generate random points within a raster object.
Description
Providing a polygon to limit the search area can speed up the search
if the polygon is small relative to the area of a layer.
Usage
randomPts(x, n = 100, m = 2, na.rm = FALSE, pts = NULL, polygon = NULL)
Arguments
x
Raster* layer, brick or stack
n
numeric, the number of points to return
m
multiplier to use when seeking to avoid missing values.
Ignored if polygon is provided.
na.rm
logical, if TRUE then avoid cells with missing values.
pts
a table of points to avoid. If na.rm is TRUE that is handled first,
then point avoidance is handled. Ignored if NULL.
polygon
polygon (sfc or SpatialPolygon) that describes the region to select
points from. Ignored if NULL.
Value
a table of locations with values. Note that it is possible
to filter the available pool of candidate cells to something
less than the requested sample, n. In such cases some
samples may be replicates.
BigelowLab/rasf documentation built on July 18, 2022, 10:19 p.m.
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| randomPts | R Documentation |
Generate random points within a raster object.
Description
Providing a polygon to limit the search area can speed up the search if the polygon is small relative to the area of a layer.
Usage
randomPts(x, n = 100, m = 2, na.rm = FALSE, pts = NULL, polygon = NULL)
Arguments
x |
Raster* layer, brick or stack |
n |
numeric, the number of points to return |
m |
multiplier to use when seeking to avoid missing values. Ignored if polygon is provided. |
na.rm |
logical, if TRUE then avoid cells with missing values. |
pts |
a table of points to avoid. If na.rm is TRUE that is handled first, then point avoidance is handled. Ignored if NULL. |
polygon |
polygon (sfc or SpatialPolygon) that describes the region to select points from. Ignored if NULL. |
Value
a table of locations with values. Note that it is possible to filter the available pool of candidate cells to something less than the requested sample, n. In such cases some samples may be replicates.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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