Extract values of raster using in parallel — extract

Function to extract values of rasters along lines using parallel computation. The function is actually not very optimized currently.

Usage

extract_along(
  r,
  sl,
  ws,
  col_step_length = "dist",
  step_id = "use_ava_data_animals_id",
  prefix = "along_",
  summarize = TRUE
)

# S3 method for class 'SpatRaster'
extract_along(
  r,
  sl,
  ws,
  col_step_length = "dist",
  step_id = "use_ava_data_animals_id",
  prefix = "along_",
  summarize = TRUE
)

# S3 method for class 'data.frame'
extract_along(
  r,
  sl,
  ws,
  col_step_length = "dist",
  step_id = "use_ava_data_animals_id",
  prefix = "along_"
)

Arguments

r: [SpatRast,data.frame]
Either a set of rasters, in the SpatRaster format from terra; or a data.frame resulting of terra::extract for linestrings, for a set of environmental variables (defined here as the columns).
sl: [sf,SpatVector]
Vector of step lines, with a column representing the step id (stratum or just step number) and a LINESTRING geometry for each step. Can be a sf or a SpatVector object.
ws: List of which summary statistics are to be computed. Currently, only "mean", "max", "min", and "sum" are implemented.
col_step_length: [character="dist"]
String with the name of the column representing step length.
step_id: [character="use_ava_data_animals_id"]
String with the name of the column representing step ID.
prefix: [character="along_"]
Prefix to be added to the extracted variable names.