R: Palette for categories

categorical_pal {igraph} | R Documentation

## Palette for categories

### Description

This is a color blind friendly palette from https://jfly.uni-koeln.de/color/. It has 8 colors.

### Usage

    categorical_pal(n)

### Arguments

`n` | The number of colors in the palette. We simply take the first `n` colors from the total 8.

### Details

This is the suggested palette for visualizations where vertex colors mark categories, e.g. community membership.

### Value

A character vector of RGB color codes.

### Examples

    library(igraphdata)
    data(karate)
    karate <- karate
      add_layout_(with_fr())
      set_vertex_attr("size", value = 10)

    cl_k <- cluster_optimal(karate)

    V(karate)$color <- membership(cl_k)
    karate$palette <- categorical_pal(length(cl_k))
    plot(karate)

### See Also

Other palettes: `diverging_pal()`, `r_pal()`, `sequential_pal()`

[Package igraph version 1.2.11 Index]