CODEWITHSUNDEEP
rggplot2
ytoamn
ytoamn

Reputation: 377

ggplot() color each point manually

How do I create a scatter-plot in ggplot() with each points coloured manually? The necessary colours are given in my dataframe.

> head(df)
     x    y       col
1 0.72 2757   #2AAE89
2 0.72 2757   #2DFE83
3 0.72 2757   #40FE89
4 0.70 2757   #28FE97
5 0.86 2757   #007C7D
6 0.75 2757   #24FEA1

The colour of the points must be exactly as given in the dataframe

Upvotes: 0

Views: 671

Answers (1)

teunbrand
teunbrand

Reputation: 38063

Luckily there is a relatively easy solution by using scale_colour_identity(), see the following example:

library(ggplot2)

z <- "     x    y    z     col
1 0.72 2757   86 #2AAE89
2 0.72 2757   86 #2DFE83
3 0.72 2757   86 #40FE89
4 0.70 2757   82 #28FE97
5 0.86 2757   26 #007C7D
6 0.75 2757   79 #24FEA1"

df <- read.table(text = z, header = T)

ggplot(df, aes(x, y, colour = col)) +
  geom_point() +
  scale_colour_identity()

enter image description here

EDIT: I made a mistake in loading in the data, but the plotting syntax is still valid.

Upvotes: 3

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