makeSlope

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

if (FALSE) { # \dontrun{
pth <- "OUTPUT PATH"
dtm <- rast(paste0(pth, "dtm.tif"))
slpR <- makeSlope(dtm, cellSize=1, writeRaster=TRUE, outName=paste0(pth, "slp.tif"), device="cuda")
} # }