CODEWITHSUNDEEP
r
Sara Dwindler
Sara Dwindler

Reputation: 75

How to change colour theme in ggplot

I have runned the following code:

ggplot(Cars)) +
geom_point(aes(colour = Model)) +
labs(title = "Cars in the US") +
labs(colour = "USD")

And the small box to the right of the plot turns in a blue tone (down below). However I want to have it in two version, on in green tone and the other in red tone (red, orange, yellow depending on value). How do I do that?

enter image description here

Upvotes: 0

Views: 118

Answers (1)

Yacine Hajji
Yacine Hajji

Reputation: 1449

If you want two different graphs with colors of your choice for each one, you could do this with the function scale_color_gradient

### Miscellaneous
library(ggplot2)
library(ggpubr)
data(cars)

### Initiating plots
firstPlot <- ggplot(cars, aes(x=speed, y=dist)) +
  geom_point(aes(colour = speed)) +
  labs(title = "Cars in the US") +
  labs(colour = "USD") + 
  scale_color_gradient2(midpoint=15, 
                        low="yellow", 
                        mid="orange", 
                        high="red", space="Lab")

secondPlot <- ggplot(cars, aes(x=speed, y=dist)) +
  geom_point(aes(colour = speed)) +
  labs(title = "Cars in the US") +
  labs(colour = "USD") + 
  scale_color_gradient2(midpoint=15, 
                        low="#56ffba", 
                        mid="#2bc888", 
                        high="#078954", space="Lab")

### Display plots
ggarrange(firstPlot, secondPlot, nrow=1, ncol=2)

enter image description here

Upvotes: 1

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