get_vaa_names: Available NHDPlusV2 Attributes
In dblodgett-usgs/nhdplusTools: NHDPlus Tools

get_vaa_names

R Documentation

Available NHDPlusV2 Attributes

Description

Find variables available from the NHDPlusV2 attribute data.frame

Usage

get_vaa_names(updated_network = FALSE)

Arguments

updated_network

logical default FALSE. If TRUE, updated network attributes from E2NHD and National Water Model retrieved from \Sexpr[results=rd]{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

Value

character vector

Examples

## Not run: 
# 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)

## End(Not run)

dblodgett-usgs/nhdplusTools documentation built on March 26, 2024, 12:12 p.m.