Get a long color palette with RColorBrewer

The RColorBrewer package is a great tool when it comes to build a color palette with R. However, the default palettes give only about 10 different colors. Here is a tip to get more colors in a graph, still using this useful package. Basically, it relies on the colorRampPalette() function to extand a first palette.

Note: visit this post for a complete list of the available palettes.

# No margin
par(mar=c(0,0,1,0))

# Load RColorBrewer
library(RColorBrewer)

# Classic palette BuPu, with 4 colors
coul <- brewer.pal(4, "PuOr") 

# Add more colors to this palette :
coul <- colorRampPalette(coul)(25)

# Plot it
pie(rep(1, length(coul)), col = coul , main="")

Related chart types

Ggplot2

Animation

Interactivity

Caveats

Data art

Contact

This document is a work by Yan Holtz. Any feedback is highly encouraged. You can fill an issue on Github, drop me a message on Twitter, or send an email pasting yan.holtz.data with gmail.com.

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