Download and crop the National Hydrography Dataset.
get_nhd
returns a list of Simple Feature
objects extracted from the National Hydrography Dataset.
get_nhd( template, label, nhdplus = FALSE, extraction.dir = file.path(tempdir(), "FedData", "extractions", "nhd", label), force.redo = FALSE )
template
: An Simple Feature
or SpatRaster
object to serve as a template for cropping.
label
: A character string naming the study area.
nhdplus
: Extract data from the USGS NHDPlus High Resolution service (experimental)
extraction.dir
: A character string indicating where the extracted and cropped NHD data should be put.
force.redo
: If an extraction for this template and label already exists, should a new one be created?
A list of sf
collections extracted from the National Hydrography Dataset.
## Not run: # Get the NHD (USA ONLY) NHD <- get_nhd( template = FedData::meve, label = "meve" ) NHD NHD %>% plot_nhd(template = FedData::meve) ## End(Not run)
Useful links