subset_rpu {nhdplusTools}

Subset by Raster Processing Unit

Description

Given flowlines and an rpu_code, performs a network-safe subset such that the result can be used in downstream processing. Has been tested to work against the entire NHDPlusV2 domain and satisfies a number of edge cases.

Usage

subset_rpu(fline, rpu, run_make_standalone = TRUE, strict = FALSE)

Arguments

fline

sf data.frame NHD Flowlines with comid, pathlength, lengthkm, hydroseq, levelpathi, rpuid, and arbolatesu (dnhydroseq is required if tocomid is not provided).

rpu

character e.g. "01a"

run_make_standalone

logical default TRUE should the run_make_standalone function be run on result?

strict

logical if TRUE, paths that extend outside the RPU but have no tributaries in the upstream RPU will be included in the output.

Value

data.frame containing subset network

Examples

source(system.file("extdata/sample_data.R", package = "nhdplusTools"))

sample_flines <- sf::read_sf(sample_data, "NHDFlowline_Network")

subset_rpu(sample_flines, rpu = "07b")