How to change default color of points in ggplot2 conditional aes?

Question

I want to change the default colors (currently blue and red) of the points in ggplot2 to another color set.

ggplot(data = mpg) + 
  geom_point(mapping = aes(x = displ, y = hwy, color=displ<5))

score 0 · Answer 1 · edited Jan 16 '19 at 17:32

0

ggplot(data=mpg) + 
    geom_point(mapping = aes(x=displ, y=hwy, color=displ<5)) +
    scale_colour_manual(values=c("gold", "red"))

Here, we use a logical vector, which is converted to numeric to provide a two-color scale i.e. the value for aes(color) is as.integer(mpg$displ < 5).

We then convert this into another two-color scale of our choice, here using named values for colors. This gives:

For more choices for colors, see the following (in package:grDevices, so should be loaded by default):

demo("colors")

edited Jan 16 '19 at 17:32

dardisco

5,086
2
39
54

answered Jan 15 '19 at 23:04

Mike

121
1
1
9

3

Please explain your answer. – common sense Jan 16 '19 at 09:40
1

Code only answers arent encouraged as they dont provide much information for future readers please provide some explanation to what you have written – WhatsThePoint Jan 16 '19 at 10:06
1

Please add some context to the _code snippet_ for the benefit of the future readers. – undetected Selenium Jan 16 '19 at 12:51

How to change default color of points in ggplot2 conditional aes?

1 Answers1