process_dem: Perform initial computations on a Digital Elevation Model

In VincentGodard/gtbox: A Geomorphology Toolbox With Various Functions For The Analysis of Topography and Surface Processes

Perform initial computations on a Digital Elevation Model

Description

Perform initial computations on a Digital Elevation Model This function relies on the following GRASS GIS modules : r.watershed, r.stream.distance (add-on to be installed)

Usage

process_dem(dem, th_px, gisbase, precip = NULL, to_net = FALSE)

Arguments

dem	Digital Elevation Model (SpatRaster)
th_px	Accumulation threshold in pixels to initiate a stream (integer)
gisbase	The directory path to GRASS binaries and libraries, containing bin and lib subdirectories among others
precip	precipitation raster (m/a) to be used for annual discharge computation
to_net	Flag to compute distance to network ('dtn') and elevation above network ('ean') (optional)

Value

A SpatRaster with the following layers: 'z' (DEM), 'acc' (flow accumulation), 'dir' (flow direction), 'dist' (distance along network), 'st_id' (stream id), 'sto' (Strahler orders of the stream segments), 'bs_id' (sub basin id) Optionally

VincentGodard/gtbox documentation built on Sept. 4, 2022, 3:46 a.m.