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igraph support

Source: vignettes/igraph.qmd

g6R supports igraph objects via the function g6_igraph(). Instead of a nodes and edges data frame, it accepts an igraph object as input.

kite <- make_graph("Krackhardt kite")
g6_igraph(kite) |>
  g6_layout(d3_force_layout()) |>
  g6_behaviors(drag_element_force())

The philosophy of plotting networks with igraph is that mapping styles is done via node attributes. So a node attribute “color” defines the color of each node explicitly. The function g6_igraph() implements this philosophy so that adding node (or edge) attributes that correspond to style arguments in g6 are recognized.

set.seed(123)
V(kite)$fill <- sample(
  c("red", "green", "blue"),
  vcount(kite),
  replace = TRUE
)
E(kite)$stroke <- sample(
  c("red", "green", "blue"),
  ecount(kite),
  replace = TRUE
)
E(kite)$lineWidth <- 3

g6_igraph(kite) |>
  g6_layout(d3_force_layout()) |>
  g6_behaviors(drag_element_force())