color_communities: Color Nodes by Community

In cograph: Analysis and Visualization of Complex Networks

Color Nodes by Community

Description

Generate colors for nodes based on community membership. Designed for direct use with splot() node.color parameter.

Usage

color_communities(x, method = "louvain", palette = NULL, ...)

Arguments

x	Network input: matrix, igraph, network, cograph_network, or tna object.
method	Community detection algorithm. See detect_communities for available methods. Default "louvain".
palette	Color palette to use. Can be: NULL (default): Uses a colorblind-friendly palette A character vector of colors A function that takes n and returns n colors A palette name: "rainbow", "colorblind", "pastel", "viridis"
...	Additional arguments passed to detect_communities.

Value

A named character vector of colors (one per node), suitable for use with splot() node.color parameter.

See Also

detect_communities, splot

Examples

adj <- matrix(c(0, .5, .8, 0,
                .5, 0, .3, .6,
                .8, .3, 0, .4,
                 0, .6, .4, 0), 4, 4, byrow = TRUE)
rownames(adj) <- colnames(adj) <- c("A", "B", "C", "D")

# Basic usage with splot
splot(adj, node_fill = color_communities(adj))

# Custom palette
splot(adj, node_fill = color_communities(adj, palette = c("red", "blue")))

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