ipdw: Inverse Path Distance Weighting

In jsta/ipdw: Spatial Interpolation by Inverse Path Distance Weighting

Inverse Path Distance Weighting

Description

Interpolate geo-referenced point data using inverse path distance weighting.

Usage

ipdw(
  sf_ob,
  costras,
  range,
  paramlist,
  overlapped = FALSE,
  yearmon = "default",
  removefile = TRUE,
  step = 16,
  dist_power = 1,
  trim_rstack = FALSE
)

Arguments

sf_ob	sf object with point geometries
costras	RasterLayer. Cost raster
range	numeric. Range of interpolation neighborhood
paramlist	character. String representing parameter names
overlapped	logical. Default is FALSE, specify TRUE if some points lie on top of barriers
yearmon	character. String specifying the name of the sf_ob
removefile	logical. Remove files after processing?
step	numeric. Number of sub loops to manage memory during raster processing.
dist_power	numeric. Distance decay power (p)
trim_rstack	logical. Trim the raster output by the convex hill of sf_ob

Details

This is a high level function that interpolates an sf object with point geometries in a single pass.

Points must be located within a single contiguous area. The presence of "landlocked" points will cause errors. It may be necessary to increase the value assigned to land areas when using a large range value in combination with a large sized cost rasters (grain x extent). In these cases, the value of land areas should be increased to ensure that it is always greater than the maximum accumulated cost path distance of any given geo-referenced point.

Value

RasterLayer

Examples

# see vignette

jsta/ipdw documentation built on March 15, 2023, 4:06 a.m.