Convert to a downstream directed network
Convert an upstream directed or non-directed network to a downstream directed network.
sbn_down_dir(g, mouth)
g
: a river network as an igraph object.mouth
: river mouth vertex id.A downstream directed network.
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)