get_hydro_data {WES} | R Documentation |
Get hydrological data
Description
This function takes information of where and when a set of environmental samples were
collected and retrieves a suite of topographical and hydrological variables for each unique
location. The variables include: elevation, slope, aspect, Topographical Wetness Index (TWI),
flow accumulation, total flow accumulation within 500m, and distance to the nearest stream.
If a DEM is not provided, then a DEM is acquired via elevatr::get_elev_raster
and the suite of variables are calculated using functions from the 'WhiteboxTools'
R frontend.
Usage
get_hydro_data(lon, lat, path_dem_raster = NULL, path_output)
Arguments
lon |
A numeric vector giving the longitude of the sampling sites in Decimal Degrees. |
lat |
A numeric vector giving the latitude of the sampling sites in Decimal Degrees. |
path_dem_raster |
The file path to a Digital Elevation Model (DEM) raster. See |
path_output |
The file path of an output directory where spatial data will be saved. |
Value
data.frame
Examples
MCO_lon <- c(7.416, 7.434)
MCO_lat <- c(43.734, 43.747)
download_elevation_data(lon = MCO_lon,
lat = MCO_lat,
path_output = tempdir())
get_hydro_data(lon = MCO_lon,
lat = MCO_lat,
path_dem_raster = file.path(tempdir(), 'dem.tif'),
path_output = tempdir())