Need a solution on color problem with ggplot

Question

I have a problem with visualizing a ggplot graph. I would love to have different intervals in different colors.

Here is my code:

 ggplot(totalarum,aes(y=Pris,x=Boyta)+
 geom_point() + 
  xlim(100, 200) +
  ylim(1, 10000000)

so what im after is a solution on how to get, for an example x<=100 to get the color red and 100<x<=200 to be the color blue.

Thanks on advance!

Please add data using `dput` to recreate the problem – Vishal A. Dec 30 '21 at 10:37 — Vishal A., Dec 30 '21 at 10:37

stefan · Answer 1 · 2022-01-02T10:06:12.943

If you have two intervals or only one condition you could map that condition on the color aesthetic and set your desired colors via scale_color_manual:

totalarum <- data.frame(
  Boyta = seq(0, 200, length.out = 20),
  Pris = seq(0, 10000000, length.out = 20)
)

library(ggplot2)

ggplot(totalarum, aes(y = Pris, x = Boyta, color = Boyta <= 100)) +
  geom_point() +
  scale_color_manual(values = c("TRUE" = "red", "FALSE" = "blue"))

EDIT In the more general case where you have multiple intervals I would suggest to add a new column to your dataset using e.g. cut which could then be mapped on the color aes:

library(ggplot2)

totalarum <- data.frame(
  Boyta = seq(0, 500, length.out = 20),
  Pris = seq(0, 10000000, length.out = 20)
)
totalarum$Boyta_cut <- cut(totalarum$Boyta, breaks = seq(0, 500, 100), include.lowest = TRUE, right = TRUE)

colors <- c("red", "blue", "green", "purple", "steelblue")

ggplot(totalarum, aes(y = Pris, x = Boyta, color = factor(Boyta_cut))) +
  geom_point() +
  scale_color_manual(values = colors)

Thank you! If i would like intervals like, 0-100, 100-200, 200-300 and up to 500-600? — Ted Persson, Dec 30 '21 at 14:37
In the more general case you could add a new column to your dataset. See my edit. — stefan, Jan 02 '22 at 10:07

Need a solution on color problem with ggplot

1 Answers1