edge_count {DiagrammeR} | R Documentation |
From a graph object of class
dgr_graph
, get a count of edges in the graph
and optionally obtain a count of edges by their
relationship type.
edge_count(graph, rel = FALSE)
graph |
a graph object of class
|
rel |
either a logical value, where |
a numeric vector of single length.
# Set a seed set.seed(24) # Create a node data frame (ndf) ndf <- create_node_df( n = 26, label = TRUE, type = c(rep("a", 7), rep("b", 9), rep("c", 8), rep("d", 2))) # Create an edge data frame (edf) edf <- create_edge_df( from = sample(1:26, replace = TRUE), to = sample(1:26, replace = TRUE), rel = c(rep("rel_a", 7), rep("rel_b", 9), rep("rel_c", 8), rep("rel_d", 2))) # Create a graph using the ndf and edf graph <- create_graph( nodes_df = ndf, edges_df = edf) # Get a total count of edges in the graph edge_count(graph, rel = FALSE) #> [1] 26 # Get a count of edges that have the # relationship of `rel_a` edge_count(graph, rel = "rel_a") #> [1] 7 # Get a count of edges with relationships # `rel_a` and `rel_b` edge_count(graph, rel = c("rel_a", "rel_b")) #> [1] 16