R: Diverging palette

diverging_pal {igraph} | R Documentation

## Diverging palette

### Description

This is the ‘PuOr’ palette from http://colorbrewer2.org. It has at most eleven colors.

### Usage

    diverging_pal(n)

### Arguments

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

### Details

This is similar to `sequential_pal`, but it also puts emphasis on the mid-range values, plus the the two extreme ends. Use this palette, if you have such a quantity to mark with vertex colors.

### Value

A character vector of RGB color codes.

### See Also

Other palettes: `categorical_pal`, `r_pal`, `sequential_pal`

### Examples

    ## Not run:
    library(igraphdata)
    data(foodwebs)
    fw <- foodwebs[[1]] %>%
      induced_subgraph(V(.)[ECO == 1]) %>%
      add_layout_(with_fr()) %>%
      set_vertex_attr("label", value = seq_len(gorder(.))) %>%
      set_vertex_attr("size", value = 10) %>%
      set_edge_attr("arrow.size", value = 0.3)

    V(fw)$color <- scales::dscale(V(fw)$Biomass %>% cut(10), diverging_pal)
    plot(fw)

    data(karate)
    karate <- karate %>%
      add_layout_(with_kk()) %>%
      set_vertex_attr("size", value = 10)

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

    ## End(Not run)

[Package igraph version 1.2.2 Index]