Graph vector along nodes — node

A node_vec is a vector of graph nodes with associated edges stored as attributes.

Usage

node_vec(x = list(), from = integer(), to = integer(), ..., directed = TRUE)

Arguments

x: A vector representing the nodes in the graph.
from: Integer vector of 'from' node positions into x. Hyperedges (multiple 'from' nodes per edge) are not yet supported.
to: Integer vector of 'to' node positions into x.
...: Named edge attribute vectors (e.g. weight = c(1, 2, 5)), recycled to the number of edges. from and to are reserved and cannot be used as attribute names. Attribute columns are stored on the edge table itself, so they slice, replicate, and reorient with the edges they belong to (see nodes()/edges()).
directed: A single logical value: is incidence ordered (from -> to) or symmetric?

Value

A node_vec object.

Examples


g <- node_vec(
 x = factor(c("A", "B", "C")),
 from = c(1L, 2L, 1L),
 to = c(2L, 3L, 1L),
 weight = c(1, 2, 5)
)
g
#> <node_vec[3]>
#> [1] A B C

if (requireNamespace("igraph", quietly = TRUE)) {
  igraph::as.igraph(g)
}
#> IGRAPH b1aded8 D--- 3 3 -- 
#> + edges from b1aded8:
#> [1] 1->2 2->3 1->1