Follow up of : How to make a sunburst plot in R?

Question

I'm new to R and I would have asked the question directly in the comments but I don't have the reputation yet :D

Basically, I wanted to do a sunburst diagram like dmp suggested in this thread: How to make a sunburst plot in R or Python?

However, my dataframe looks more like this:

df <- data.frame(
    'level1'=c('a', 'a', 'a', 'b', 'b', 'b', 'c', 'c'), 
    'level2'=c('AA', 'BB', 'CC', 'AA', 'BB', 'CC', 'AA', 'BB'), 
    'value'=c(12.5, 12.5, 75, 50, 25, 25, 36, 64))

So when I plot the sunburst plot as follows:

ggplot(df, aes(y=value)) +
    geom_bar(aes(fill=level1, x=0), width=.5, stat='identity') + 
    geom_bar(aes(fill=level2, x=.25), width=.25, stat='identity') + 
    coord_polar(theta='y')

ggplot groups the level2 together (so adds all AA together, then all BB and all CC) instead of leaving each within their level1. How do I prevent that?

Thank you very much in advance,

Nath

score 2 · Accepted Answer · answered Mar 21 '19 at 14:12

You can try adding a row ID column to your data frame & use it explicitly as a grouping variable. This prevents ggplot() from grouping the bars by the fill aesthetic:

library(dplyr)

ggplot(df %>% mutate(id = seq(1, n())), 
       aes(y = value, group = id)) +
  geom_col(aes(fill = level1, x = 0), width = .5) + 
  geom_col(aes(fill = level2, x = .25), width = .25) +
  coord_polar(theta = 'y')

Follow up of : How to make a sunburst plot in R?

1 Answers1