OverlayDEM: Create DEM mosaic to cover spatial object

In ECCC-MSC/Basin-Delineation: Finds upstream area and upstream stations

Description

Covers a shape with a DEM grid

Usage

OverlayDEM(geom1, tileindex, DEM_dir, output_dir, tol, product = "CDED",
  tileid_field = "NTS_SNRC", ...)

Arguments

geom1	An R Spatial* object to be covered with the DEM
tileindex	spatialpointspolygon of DEM tile indices or path to shapefile of tile index
DEM_dir	directory where DEM tiles are stored
output_dir	where output DEM should be saved
tol	(optional) how wide should geom1 be buffered (metres) before determining how big the DEM needs to be to cover it
tileid_field	Name of column in tileindex that gives DEM sheet number
...	optional arguments passed to CompileDEM

Details

Builds a DEM from elevation dataset that either extends a fixed distance on either side of a spatialobject (if a tol(erace) is specified) or intersects the DEM index (if tileindex is specified)

Value

name of output DEM

ECCC-MSC/Basin-Delineation documentation built on June 9, 2019, 7:29 p.m.