R ggplot custom label axis ticks with other variable

Question

When labelling axis ticks I'd like to add other information from the dataframe in parentheses. For example, using code snippet below I'd like to automatically include the information on Area in parentheses next to the label X. In other words, the label might say 'Chicago (45)' instead of just 'Chicago'. I know I can do this manually by setting labels in scale_x_discrete. However, can I do this automatically? My dataset has a large number of entries so I would like to avoid doing this manually.

dataset <- data.frame(Area = sample(c(NA, 1:100), 3, rep = TRUE),
                      Y = rnorm(3), X = c("Chicago","New York", "Orlando"))
ggplot(dataset, aes(X, Y)) + geom_point()

You could do something like this on the fly: aes(paste0(X, "\n(", round(Area), ")"), Y) — eipi10
– eipi10, Commented May 27, 2019 at 18:34

MrNetherlands · Accepted Answer · 2019-05-27 18:31:28Z

1

You can build a new column with your desired ticks labels:

library(dyplr)
library(stringr)
library(ggplot2)
dataset = dataset %>% mutate(label = str_c(X, " (", Area, ")"))

Then use the column label in the aesthetics

ggplot(dataset, aes(label, Y)) + geom_point()

answered May 27, 2019 at 18:31

MrNetherlands

9407 silver badges15 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

R ggplot custom label axis ticks with other variable

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related