Creates a graph

This creates an empty graph.

create_graph(directed = FALSE)

Arguments

directed	Choose if the graph is directed or not

Value

A nctx graph

Examples

library(RUnit)
library(nctx)
g <- create_graph(directed=TRUE)
checkTrue(is_directed(g))
#> Error in is_directed(g): Not a graph object
checkEquals(num_vertices(g), 0)
#> [1] TRUE
checkEquals(num_edges(g), 0)
#> [1] TRUE
g <- create_graph(TRUE)
checkTrue(is_directed(g))
#> Error in is_directed(g): Not a graph object
checkEquals(num_vertices(g), 0)
#> [1] TRUE
checkEquals(num_edges(g), 0)
#> [1] TRUE
g <- create_graph(directed=FALSE)
checkTrue(!is_directed(g))
#> Error in is_directed(g): Not a graph object
checkEquals(num_vertices(g), 0)
#> [1] TRUE
checkEquals(num_edges(g), 0)
#> [1] TRUE
g <- create_graph(FALSE)
checkTrue(!is_directed(g))
#> Error in is_directed(g): Not a graph object
checkEquals(num_vertices(g), 0)
#> [1] TRUE
checkEquals(num_edges(g), 0)
#> [1] TRUE