nhdplusTools (version 1.3.2)

get_vaa_names: Available NHDPlusV2 Attributes

Description

Find variables available from the NHDPlusV2 attribute data.frame

Usage

get_vaa_names(updated_network = FALSE)

Value

character vector

Arguments

updated_network

logical default FALSE. If TRUE, updated network attributes from E2NHD and National Water Model retrieved from tools:::Rd_expr_doi("10.5066/P976XCVT").

Details

The VAA data is a aggregate table of information from the NHDPlusV2 elevslope.dbf(s), PlusFlowlineVAA.dbf(s); and NHDFlowlines. All data originates from the EPA NHDPlus Homepage here. To see the location of cached data on your machine use get_vaa_path. To view aggregate data and documentation, see here

Examples

if (FALSE) {
# This will download the vaa file to the path from get_vaa_path()
get_vaa_names()

#cleanup if desired
unlink(dirname(get_vaa_path()), recursive = TRUE)
}