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How to create scatterplot for categories with grey color palette using ggplot2 in R?
To create scatterplot for categories with grey color palette using ggplot2, we can follow the below steps −
- First of all, create a data frame.
- Then, create the scatterplot for categories with default color of points.
- Create the scatterplot for categories with color of points in grey palette.
Create the data frame
Let's create a data frame as shown below −
x<-rnorm(25)
y<-rnorm(25)
Group<-sample(c("First","Second","Third"),25,replace=TRUE)
df<-data.frame(x,y,Group)
dfOn executing, the above script generates the below output(this output will vary on your system due to randomization) −
x y Group 1 0.03036902 -1.08989993 First 2 -1.36496321 -1.28054928 Third 3 0.23855417 -0.12276306 Third 4 0.52709378 -0.19730924 First 5 -1.24295750 -1.48467998 First 6 -0.57012334 0.70429757 Third 7 -2.23872847 -0.20110399 Third 8 0.51140516 0.14296460 First 9 0.55635303 0.20972904 Third 10 -0.24455115 -0.41292120 Third 11 0.38049399 -0.99364419 First 12 0.71502187 0.18136820 Third 13 -0.65251508 -0.09298097 First 14 -0.88401096 0.19342739 First 15 1.66023122 0.32843555 Second 16 -0.58101208 -0.49223091 First 17 -1.17912751 -0.69346144 Third 18 -0.75448095 -1.63278740 Third 19 -1.01581774 -0.05109014 Third 20 0.18852503 -2.13195617 First 21 -0.10338979 0.71512367 Second 22 1.83279352 -1.37538539 Second 23 -0.71975579 0.52236441 Third 24 0.12262292 0.81983890 First 25 -0.26669515 0.77764427 Second
Create the scatterplot for categories
Loading ggplot2 package and creating scatterplot for categories based on Group values −
library(ggplot2)
x<-rnorm(25)
y<-rnorm(25)
Group<-sample(c("First","Second","Third"),25,replace=TRUE)
df<-data.frame(x,y,Group)
ggplot(df,aes(x,y,color=Group))+geom_point()Output
Create the scatterplot for categories with grey color palette
Use scale_color_grey function to create the scatterplot for points of categories colored in grey palette −
library(ggplot2)
x<-rnorm(25)
y<-rnorm(25)
Group<-sample(c("First","Second","Third"),25,replace=TRUE)
df<-data.frame(x,y,Group)
ggplot(df,aes(x,y,color=Group))+geom_point()+scale_color_grey()Output
Updated on: 13-Aug-2021
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