process_huc: Retrieve Hydrologic Unit Code (HUC) data

In amadeus: Accessing and Analyzing Large-Scale Environmental Data

Retrieve Hydrologic Unit Code (HUC) data

Description

Retrieve Hydrologic Unit Code (HUC) data

Usage

process_huc(
  path,
  layer_name = NULL,
  huc_level = NULL,
  huc_header = NULL,
  extent = NULL,
  ...
)

Arguments

path	character. Path to the file or the directory containing HUC data.
layer_name	character(1). Layer name in the path
huc_level	character(1). Field name of HUC level
huc_header	character(1). The upper level HUC code header to extract lower level HUCs.
extent	numeric(4) or SpatExtent giving the extent of the raster if NULL (default), the entire raster is loaded
...	Arguments passed to nhdplusTools::get_huc()

Value

a SpatVector object

Author(s)

Insang Song

See Also

nhdplusTools::get_huc

Examples

## NOTE: Examples are wrapped in `\dontrun{}` as function requires a large
##       amount of data which is not included in the package.
## Not run: 
library(terra)
getf <- "WBD_National_GDB.gdb"
# check the layer name to read
terra::vector_layers(getf)
test1 <- process_huc(
  getf,
  layer_name = "WBDHU8",
  huc_level = "huc8"
)
test2 <- process_huc(
  getf,
  layer_name = "WBDHU8",
  huc_level = "huc8"
)
test3 <- process_huc(
  "",
  layer_name = NULL,
  huc_level = NULL,
  huc_header = NULL,
  id = "030202",
  type = "huc06"
)

## End(Not run)

amadeus documentation built on April 4, 2025, 12:21 a.m.