View source: R/select_edges_by_edge_id.R
select_edges_by_edge_id | R Documentation |
Select edges in a graph object of class dgr_graph
using edge ID values.
select_edges_by_edge_id(graph, edges, set_op = "union")
graph |
A graph object of class |
edges |
A vector of edge IDs for the selection of edges present in the graph. |
set_op |
The set operation to perform upon consecutive selections of
graph edges This can either be as a |
A graph object of class dgr_graph
.
# Create a graph with 5 nodes
graph <-
create_graph() %>%
add_path(n = 5)
# Create a graph selection by selecting
# edges with edge IDs `1` and `2`
graph <-
graph %>%
select_edges_by_edge_id(
edges = 1:2)
# Get the selection of edges
graph %>% get_selection()
# Perform another selection of edges,
# with edge IDs `1`, `2`, and `4`
graph <-
graph %>%
clear_selection() %>%
select_edges_by_edge_id(
edges = c(1, 2, 4))
# Get the selection of edges
graph %>% get_selection()
# Get the fraction of edges selected
# over all the edges in the graph
graph %>%
{
l <- get_selection(.) %>%
length(.)
e <- count_edges(.)
l/e
}
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