R: Sequential palette

sequential_pal {igraph} | R Documentation

## Sequential palette

### Description

This is the ‘OrRd’ palette from https://colorbrewer2.org/. It has at most nine colors.

### Usage

    sequential_pal(n)

### Arguments

`n` | The number of colors in the palette. The maximum is nine currently.

### Details

Use this palette, if vertex colors mark some ordinal quantity, e.g. some centrality measure, or some ordinal vertex covariate, like the age of people, or their seniority level.

### Value

A character vector of RGB color codes.

### See Also

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

### Examples

    ## Not run:
    library(igraphdata)
    data(karate)
    karate <- karate %>%
      add_layout_(with_kk()) %>%
      set_vertex_attr("size", value = 10)

    V(karate)$color <- scales::dscale(degree(karate) %>% cut(5), sequential_pal)
    plot(karate)

    ## End(Not run)

[Package igraph version 1.3.1 Index]