How to add count labels to stacked graph on R?

Question

So I'm new to R and already checked countless Stack Overflow threads and youtube videos but cant figure out how to do this simple taks. I have a stacked bar graph and wanted to labels on top of each bar for the various values counted.

Here's the basic code:

ggplot(data=cyclist_data2) +
  geom_bar(mapping = aes(x=member_casual, fill=rideable_type))

And the consequent graph:

I've tried adding a geom_text function that I saw in a video but it didn't work:

ggplot(data=cyclist_data2, mapping=aes(x=member_casual, y=rideable_type)) +
  geom_bar(stat = 'identity') +
  geom_text(aes(label = rideable_type), vjust = -0.2, colour = black, size = 5)

Help would be appreciated!

Please run `dput(cyclist_data2)` and paste the output into your question so others have a reproducible dataset to troubleshoot your question. — Shawn Hemelstrand, Jan 23 '23 at 12:10
You could improve your chances of finding help here by adding a [minimal reproducible example](https://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example/5963610#5963610). Adding a MRE and an example of the desired output (in code form, not tables and pictures) makes it much easier for others to find and test an answer to your question. That way you can help others to help you! P.S. Here is [a good overview on how to ask a good question](https://stackoverflow.com/help/how-to-ask) — dario, Jan 23 '23 at 12:11

score 0 · Accepted Answer · answered Jan 23 '23 at 12:47

If this is your data

df
# A tibble: 6 × 3
  grp   val     frq
  <chr> <chr> <dbl>
1 a     aw       10
2 a     dg        8
3 a     fg        6
4 b     aw        7
5 b     dg       10
6 b     fg        9

use geom_text to add the labels, position_stack gives you the right positions, and vjust lets you shift the labels up and down.

ggplot(df, aes(grp, frq, fill=val, label=frq)) + 
  geom_bar(stat="identity") + 
  geom_text(position = position_stack(vjust=0.5))

Note that you can replace geom_bar(stat="identity") with geom_col().

Data

df <- structure(list(grp = c("a", "a", "a", "b", "b", "b"), val = c("aw", 
"dg", "fg", "aw", "dg", "fg"), frq = c(10, 8, 6, 7, 10, 9)), class = c("tbl_df", 
"tbl", "data.frame"), row.names = c(NA, -6L))

How to add count labels to stacked graph on R?

1 Answers1

Data