get_path_lengths {nhdplusTools} | R Documentation |
Get Path Lengths (DEPRECATED)
Description
Given a network and set of IDs, finds path lengths between all identified flowpath outlets. This algorithm finds distance between outlets regardless of flow direction.
Usage
get_path_lengths(outlets, network, cores = 1, status = FALSE)
Arguments
outlets |
vector of IDs from data.frame |
network |
data.frame with ID, toID, and lengthkm attributes. |
cores |
integer number of cores to use for parallel computation. |
status |
logical print status and progress bars? |
Value
data.frame containing the distance between pairs of network outlets. For a network with one terminal outlet, the data.frame will have 'nrow(network)^2' rows.
Examples
source(system.file("extdata", "walker_data.R", package = "nhdplusTools"))
fline <- walker_flowline
outlets <- c(5329303, 5329357, 5329317, 5329365, 5329435, 5329817)
# Add toCOMID
fline <- nhdplusTools::get_tocomid(fline, add = TRUE)
fl <- dplyr::select(fline, ID = comid, toID = tocomid, lengthkm)
get_path_lengths(outlets, fl)
[Package nhdplusTools version 1.2.1 Index]