Y-axis Scale Number in the Millions-CodePudding

Image created from the code-> I am trying to edit the Y-axis scale to represent the amount the rows of Id. The numbers needed to be shown on the scale are in the millions. I need to abbreviate the number in order for it to be seen on the visualization.

  ggplot(sleeptocalories1, aes(Id,TotalCalories)  
  geom_col(fill="steelblue")  
  theme(axis.text.x = element_text(angle = 90))  
  theme(axis.text.y = element_text(angle = 45))

CodePudding user response：

One option would be to convert the labels to millions via the labels argument of scale_y_continuous.

Using some fake random example data:

set.seed(123)
sleeptocalories1 <- data.frame(
  Id = 1:10,
  TotalCalories = runif(10, 86, 12e6)
)

library(ggplot2)

ggplot(sleeptocalories1, aes(Id, TotalCalories))  
  geom_col(fill = "steelblue")  
  scale_y_continuous(labels = ~ .x / 1e6)  
  theme(axis.text.x = element_text(angle = 90))  
  theme(axis.text.y = element_text(angle = 45))

CodePudding user response：

I like scales::label_number_si():

ggplot(data.frame(x = 1:5, y = 10^(2:6)), aes(x, y))  
  geom_col()  
  scale_y_continuous(labels = scales::label_number_si())

CodePudding user response：

The scales library can help with formatting the scales of plots. Scientific notation is an abbreviation.

library(scales)
library(ggplot2)

demo_continuous(c(0, 1e9), labels = label_number_auto())

May not be appropriate for this application, but log breaks are also possible

demo_log10(c(1, 1e5), labels = label_log())