layout_groups: Group-based Layout

In cograph: Analysis and Visualization of Complex Networks

Group-based Layout

Description

Arrange nodes based on group membership. Groups are positioned in a circular arrangement around the center, with nodes within each group also arranged in a circle.

Usage

layout_groups(
  network,
  groups,
  group_positions = NULL,
  inner_radius = 0.15,
  outer_radius = 0.35
)

Arguments

network	A CographNetwork object.
groups	Vector specifying group membership for each node. Can be numeric, character, or factor.
group_positions	Optional list or data frame with x, y coordinates for each group center.
inner_radius	Radius of nodes within each group (default: 0.15).
outer_radius	Radius for positioning group centers (default: 0.35).

Value

Data frame with x, y coordinates.

Examples

# Create a network with groups
adj <- matrix(0, 9, 9)
adj[1, 2:3] <- 1; adj[2:3, 1] <- 1  # Group 1
adj[4, 5:6] <- 1; adj[5:6, 4] <- 1  # Group 2
adj[7, 8:9] <- 1; adj[8:9, 7] <- 1  # Group 3
net <- CographNetwork$new(adj)
groups <- c(1, 1, 1, 2, 2, 2, 3, 3, 3)
coords <- layout_groups(net, groups)

cograph documentation built on April 1, 2026, 1:07 a.m.