elev_to_channel: Calculate derivatives from the Channel module

In loreabad6/terrain: Utility Functions for Terrain Derivatives Calculations

Calculate derivatives from the Channel module

Description

The main goal of this function is to calculate the Vertical Distance to the Channel Network vdcnw parameter, so it will calculate first chnet. However, it can be used to only calculate the Channel Network as well.

Usage

elev_to_channel(
  elev_sgrd,
  flow_sgrd,
  out_dir,
  prefix = "",
  envir,
  ...,
  chnet = TRUE,
  vdcnw = FALSE,
  init_value = 1e+06,
  chnet_shp = FALSE
)

Arguments

elev_sgrd	input, elevation raster data in SAGA format, can be created with elev_to_sgrd()
flow_sgrd	input, can be generated with elev_to_terrain_analysis()
out_dir	output directory
prefix	character prefix for output filenames
envir	environment to get SAGA installation, can be set with init_saga()
...	ignored, check help page for possible outputs
chnet	Channel Network: If a cell is part of a channel its value equals the channel order. Otherwise the cell is marked as no-data. Boolean, defaults to TRUE
vdcnw	Vertical Distance to Channel Network: Altitude above the channel network. Boolean, defaults to FALSE
init_value	Initiation flow accumulation value for channel network computation. Defaults to 1000000
chnet_shp	Calculate channel network in vector format

loreabad6/terrain documentation built on July 6, 2023, 6:44 a.m.