sampleRegular

0th

Percentile

Regular sample

Take a systematic sample from a Raster* object.

Keywords
spatial
Usage
sampleRegular(x, size, extent=NULL, cells=FALSE, asRaster=FALSE, corners=FALSE)
Arguments
x
a Raster object
size
positive integer giving the number of items to choose.
extent
Extent. To limit regular sampling to the area within that box
cells
Logical. Also return sampled cell numbers (if asRaster=FALSE)
asRaster
Logical. If TRUE, a rasterLayer is returned, rather then the sampled values
corners
Logical. If TRUE, the extreme corner cells are always included. This makes for rather irregular sampling when n is small; but it can be useful when asRaster=TRUE, to maintain the same extent as the input RasterLayer
Value

  • A vector, matrix (if cells=TRUE; or for a multi-layered object), or RasterLayer (if asRaster=TRUE)

See Also

sampleRandom

Aliases
  • sampleRegular
Examples
r <- raster(system.file("external/test.grd", package="raster"))
 v <- sampleRegular(r, size=100)
 x <- sampleRegular(r, size=100, asRaster=TRUE)
Documentation reproduced from package raster, version 1.7-18, License: GPL (>= 3)

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