rSkeletonise: Determine the skeleton of foreground patches in a raster

In EhrmannS/rasterTools: Obtain and process earth observation data

Description

The morphological skeleton of a patch is a binary skeletal remnant that preserves the extent and connectivity (i.e. the topology) of the patch.

Usage

rSkeletonise(obj, method = "hitormiss", kernel = NULL,
  background = NULL)

Arguments

obj	[RasterLayer(1)] The object to modify.
method	[character(1)] the method to determine the skeleton. Either "hitormiss" (default), "lantuejoul" or "beucher".
kernel	[matrix(1)] scan the raster with this kernel (default is a 3 by 3 cells diamond kernel).
background	[integerish(1)] the value any cell with value NA should have.

Details

For details, refer to skeletonise of which rSkeletonise is a wrapper.

Value

a RasterLayer of the same dimensions as obj, in which foreground patches have been transformed into their morphological skeletons.

See Also

rDistance

Other operators to determine objects: rCentroid, rPatches

Examples

input <- rtRasters$continuous
binarised <- rBinarise(input, thresh = 30)

visualise(raster::stack(binarised, rSkeletonise(binarised)))

EhrmannS/rasterTools documentation built on Sept. 4, 2019, 10:34 a.m.