Convert to a downstream directed network

Convert an upstream directed or non-directed network to a downstream directed network.

sbn_down_dir(g, mouth)

Arguments

g

a river network as an igraph object.

mouth

river mouth vertex id.

Value

A downstream directed network.

Examples

g <- sbn_create(10, 0.7)

# to undirected
g <- sbn_change_dir(g, method = "undir")

# undirected to downstream directed
sbn_down_dir(g, mouth = 1)
#> IGRAPH 76b35b1 D--- 10 9 -- 
#> + edges from 76b35b1:
#> [1]  2->1  3->1  4->3  5->3  6->4  7->5  8->6  9->7 10->8