tiles_DEM4Deriv: Splits a Raster object e.g. a digital elevation model (DEM)...

In kanj241/agrosoil: Surface and Rootzone Soil Moisture Prediction

Splits a Raster object e.g. a digital elevation model (DEM) into smaller spatial tiles

Description

It is importance to split up a large raster dataset into chunks of smaller spatial tiles so as to speed data processing and optimize the use of computer resources. Hence, this function

Usage

tiles_DEM4Deriv(i, tile.tbl, in.covs, out.path)

Arguments

i	Vector of spatial tile IDs
tile.tbl	Output of "getSpatialTiles" function from GSIFR package.
in.covs	List of DEM(s) to split into smaller spatial tiles
out.path	Path to folder containing tile directories

Value

First, a chunk of the original DEM file saved as a .rds file on disk. Second, a .sdat file on disk for later use with SAGA-GIS

Examples

library(GSIF)
library(rgdal)

i <- as.numeric(20)
DEM_ObjInfo <- GDALinfo("filename of DEM/Raster file")
tile.tbl <- getSpatialTiles(DEM_ObjInfo, block.x=2000, return.SpatialPolygons=FALSE, overlap.percent=10)
tile.tbl$ID = as.character(1:nrow(tile.tbl))

in.covs <- "filename of DEM/Raster file"
out.path <- path to folder containing tile directories

out <- tiles_DEM4Deriv(i, tile.tbl, in.covs, out.path)

kanj241/agrosoil documentation built on March 25, 2022, 12:22 a.m.