How to delete decimals from labels in plots made with the scales package in R?

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I made a plot where the fill bar is on a logarithmic scale. By default, labels appear in the format 1e+01, 1e+02, etc. I chose to modify the labels using the scales package, using the label_number() function. However, the values 0.1, 10, 1000 and 100000 appear with extra decimal places. Is there any way to show these numbers without the additional decimal places?

I would like a sequence like this: 0.001, 0.1, 10, 1000, and 100000.

library(ggplot2)
library(scales)

X <- 0
Y <- 0
Z <- 10

DF <- data.frame(X, Y, Z)

ggplot(data = DF,
       aes(x = X,
           y = Y,
           fill = Z)) +
  geom_tile() +
  scale_fill_distiller(palette = "YlGnBu",
                       trans = 'log10',
                       limits = c(0.001, 100000),
                       labels = label_number(big.mark = ""))

enter image description here

ggplot2 scale decimal r format
1 Answers

Take a look at ?label_number, you can specify arguments from base::format(). Here the trick is drop0trailing = T.

big.mark = "" is used to remove empty space in the thousandth position.

ggplot(data = DF,
       aes(x = X,
           y = Y,
           fill = Z)) +
  geom_tile() +
  scale_fill_distiller(palette = "YlGnBu",
                       trans = 'log10',
                       limits = c(0.001, 100000),
                       labels = label_number(drop0trailing = T, big.mark = ""))

enter image description here

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