Sequential palette

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.

Value

A character vector of RGB color codes.

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.

See also

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

Examples

library(igraphdata)
data(karate)
karate <- karate %>%
  add_layout_(with_kk()) %>%
  set_vertex_attr("size", value = 10)
#> This graph was created by an old(er) igraph version.
#>   Call upgrade_graph() on it to use with the current igraph version
#>   For now we convert it on the fly...

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