Different color for each bar of stack barplots in ggplot

Katherine 0
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I am trying to independently set colors for stacked barplots in ggplot.

y<-c("enjoyer", "explorer","explorer", "enjoyer", "enjoyer","enjoyer", 
"explorer")

z<-c("yes", "no", "yes", "yes", "yes", "no", "yes")

x<-data.frame(y,z)

ggplot(x, aes(y, fill = z))+geom_bar()

This returns the following graph:

blue and red bar graph

I would like to make the bottom parts of each bar different colors. I want the "enjoyer yes" to be black and the "explorer yes" to be green. The top parts can stay the same color or be set manually, no preference.

Appreciate any help!

ggplot2 r
1 Answers

You'll need to create four fill levels for each combination of enjoyer/explorer and yes/no (the quickest way is to use interaction). After that, a customized scale_fill_manual does the rest:

ggplot(x, aes(y, fill = interaction(y, z))) +
  geom_bar() +
  scale_fill_manual(
    name = NULL, 
    labels = c('No', 'Explorer: Yes', 'Enjoyer: Yes'), 
    breaks = c('enjoyer.no', 'explorer.yes', 'enjoyer.yes'), 
    values = c(enjoyer.no = 'black', explorer.no = 'black', enjoyer.yes = 'blue', explorer.yes = 'green')
  )

enter image description here

jdobres0
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