How to Combine Two Bar Plots into one Using GGPlot

Question

I am trying to combine two different bar graphs into one using GGPLOT. Seperately the code is `

ggplot(data=by_div_salaries, aes(x=women_salary, y=salaries.ClassificationName)) + 
  geom_bar(stat="identity") +labs(title = "Women Head Coach Salaries")

ggplot(data=by_div_salaries, aes(x=men_salary, y=salaries.ClassificationName)) + 
  geom_bar(stat="identity") +labs(title = "Men Head Coach Salaries")

and I am trying to get the mens salary next to the womens salary by having two bars for each ClassificationName.

I tried this:

ggplot(data=by_div_salaries, aes()) + 
  geom_bar(mapping = aes(x=women_salary, y=salaries.ClassificationName), position=position_nudge(x = 0.2), width=0.2,stat = "identity",color="green" ) +
  geom_bar(mapping = aes(x=men_salary, y=salaries.ClassificationName), position=position_nudge(x = -0.2), width=.2, stat = "identity", color = "blue") + 
  scale_y_continuous(name = "Division") +
  xlab("Salary")

But am getting this error: Error: Discrete value supplied to continuous scale


I want the two grpahs next to each other.

Try with scale_y_discrete instead of scale_y_continuous. My guess is that salaries.ClassificationName is a catagorical column. — stefan
– stefan, Commented Nov 9, 2022 at 6:05

Jon Spring · Accepted Answer · 2022-11-09 06:57:33Z

1

This sounds like a situation where reshaped ("longer") data would probably be easier to work with.

library(tidyverse)
by_div_salaries %>%
  pivot_longer(c(women_salary, men_salary)) %>%
  ggplot(aes(x=value, y=salaries.ClassificationName, fill = name)) + 
  geom_col()

answered Nov 9, 2022 at 6:57

Jon Spring

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