makeSlope: makeSlope

In geodl: Geospatial Semantic Segmentation with Torch and Terra

makeSlope

Description

Calculate slope from a digital terrain model (DTM) using torch

Usage

makeSlope(dtm, cellSize = 1, writeRaster = FALSE, outName, device = "cpu")

Arguments

dtm	Input SpatRaster object representing bare earth surface elevations.
cellSize	Resolution of raster grid. Default is 1 m.
writeRaster	TRUE or FALSE. Save output to disk. Default is TRUE.
outName	Name of output raster with full file path and extension.
device	"cpu" or "cuda". Use "cuda" for GPU computation. Without using the GPU, implementation will not be significantly faster than using non-tensor-based computation. Defaults is "cpu".

Details

Calculate topographic slope using torch in degree units. Processing on the GPU can be much faster than using base R and non-tensor-based calculations.

Examples

## Not run: 
pth <- "OUTPUT PATH"
dtm <- rast(paste0(pth, "dtm.tif"))
slpR <- makeSlope(dtm, cellSize=1, writeRaster=TRUE, outName=paste0(pth, "slp.tif"), device="cuda")

## End(Not run)

geodl documentation built on Nov. 12, 2025, 5:07 p.m.