make_neg_region: Make a negative region raster
In tabrasel/WetlandTools: General utility functions for TerrainWorks

make_neg_region

R Documentation

Make a negative region raster

Description

Creates a negative region with which to sample from that exists between an inner buffer and an outer buffer around given initiation points. This method will be used to sample a landslide database that is not considered a full inventory, i.e., we cannot assume all locations that are not marked as landslide initiation points did not have landslide.

Usage

make_neg_region(
  positive_points,
  ref_raster,
  inner_buffer,
  outer_buffer,
  return_raster = TRUE
)

Arguments

`ref_raster`	SpatRaster used as a spatial reference; typically a DEM.
`initiation_points`	A SpatVector that contains the initiation points.
`inner_buffer_rad`	The radius in meters of the inner buffer. This is the area around the initiation point that should be considered "positive", that is, within the landslide initiation zone.
`outer_buffer_rad`	The radius in meters of the outer buffer. This is the area around the landslide that can be considered "negative", that is where no landslides were observed.