Custom shape in ggplot (geom_point)

Question

Aim

I am trying to change the shape of the geom_point into a cross (so not a "plus/addition" sign, but a 'death' cross).

Attempt

Let say I have the following data:

library(tidyverse)

df <- read.table(text="x y
                 1    3 
                 2    4 
                 3    6 
                 4    7 ", header=TRUE)

I am able to change the shape using the shape parameter in geom_point into different shapes, like this:

ggplot(data = df, aes(x =x, y=y)) +  
   geom_point(shape=2)   # change shape

However, there is no option to change the shape into a cross.

Question

How do I change the shape of a value into a cross using ggplot in R?

you can refer sape.inf.usi.ch/quick-reference/ggplot2/shape for all shapes available — jacky_learns_to_code
– jacky_learns_to_code, Commented Feb 21, 2019 at 9:48

iroha · Accepted Answer · 2019-02-21 10:55:03Z

30

Shape can be set to a unicode character. The below uses the skull and crossbones but you can look up a more suitable symbol.

Note that the final result will depend on the font used to generate the plot.

ggplot(data = df, aes(x =x, y=y)) +  
  geom_point(shape="\u2620", size = 10)

answered Feb 21, 2019 at 10:55

iroha

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2 Comments

user213544 Over a year ago

"\u2020" was exactly what I was looking for!

HBat Over a year ago

Here or here is a list of other choices.

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