Interpolate points to raster using Inverse-Distance Weighting (IDW)

Source: R/analyze.R

Interpolate from points to raster using inverse-distance weighting (terra::interpIDW()). The further the input point from the destination pixel in the output raster, the less its value is applied. The dimensions of the output raster are automatically calculated based on approaching 100 pixels in the maximum dimension (of longitude or latitude) based on the extent of the area of interest.

pts_to_rast_idw(
  pts,
  fld,
  aoi,
  radius = 1.5,
  power = 1.3,
  smooth = 0.2,
  maxPoints = Inf,
  minPoints = 1,
  near = FALSE,
  fill = NA,
  out_tif = NULL,
  verbose = F
)

Arguments

pts

input points as simple features sf::sf

fld

quoted string of field from pts with z-value to interpolate

aoi

area of interest as simple features sf::sf

radius

argument for terra::interpIDW(); default = 1.5

power

argument for terra::interpIDW(); default = 1.3

smooth

argument for terra::interpIDW(); default = 0.2

maxPoints

argument for terra::interpIDW(); default = Inf

minPoints

argument for terra::interpIDW(); default = 1

near

argument for terra::interpIDW(); default = FALSE

fill

argument for terra::interpIDW(); default = NA

out_tif

output path to write raster tif using terra::writeRaster(); default = NULL

verbose

show messages of all variables used; default = FALSE

Value

terra::rast() object