add_toids: Add Downstream IDs

In hydroloom: Utilities to Weave Hydrologic Fabrics

Add Downstream IDs

Description

Generates a toid attribute from node topology by joining tonode and fromnode attributes.

Usage

add_toids(x, return_dendritic = TRUE)

## S3 method for class 'data.frame'
add_toids(x, return_dendritic = TRUE)

## S3 method for class 'hy'
add_toids(x, return_dendritic = TRUE)

## S3 method for class 'hy_topo'
add_toids(x, return_dendritic = TRUE)

## S3 method for class 'hy_node'
add_toids(x, return_dendritic = TRUE)

Arguments

x	data.frame network compatible with hydroloom_names.
return_dendritic	logical remove non dendritic paths if TRUE. Requires a "divergence" flag where 1 is main and 2 is secondary.

Details

Required attributes: fromnode, tonode

Conditionally: divergence (if return_dendritic = TRUE)

Value

hy object with toid attribute

See Also

hy_node, hy_topo, make_node_topology()

Examples

g <- sf::read_sf(system.file("extdata/new_hope.gpkg", package = "hydroloom"))

x <- add_toids(hy(g))

y <- add_toids(g)

names(g)[1:4]

names(x)[1:4]

names(y)[1:4]

hydroloom documentation built on Aug. 4, 2026, 1:07 a.m.