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How to create violin plot for categories with grey color palette using ggplot2 in R?
To create violin plot for categories with grey color palette using ggplot2, we can follow the below steps −
- First of all, create a data frame.
- Then, create the violin plot for categories with default color of violins.
- Create the violin plot for categories with color of violins in grey palette.
Creating the data frame
Let's create a data frame as shown below −
> Group<-sample(c("First","Second","Third"),25,replace=TRUE) > Score<-sample(1:1000,25) > df<-data.frame(Group,Score) > df
On executing, the above script generates the below output(this output will vary on your system due to randomization) −
Group Score 1 Second 405 2 Third 947 3 First 78 4 First 243 5 Second 45 6 Second 682 7 First 608 8 Second 657 9 First 230 10 First 900 11 Second 99 12 First 937 13 Second 957 14 Third 962 15 First 668 16 Third 228 17 Second 398 18 Second 744 19 First 997 20 Second 612 21 First 706 22 First 958 23 First 446 24 Third 895 25 Third 396
Creating violin plot with bars in default colors
Loading ggplot2 package and creating violin plot with default colors of violins −
> Group<-sample(c("First","Second","Third"),25,replace=TRUE) > Score<-sample(1:1000,25) > df<-data.frame(Group,Score) > library(ggplot2) > ggplot(df,aes(Group,Score,fill=Group))+geom_violin()
Output
Creating violin plot with violins in grey color palette
Use scale_fill_grey to create the violin plot with violins in grey color palette −
> Group<-sample(c("First","Second","Third"),25,replace=TRUE) > Score<-sample(1:1000,25) > df<-data.frame(Group,Score) > library(ggplot2) > ggplot(df,aes(Group,Score,fill=Group))+geom_violin()+scale_fill_grey()
Output
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