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How to create stacked plot with density using ggplot2 in R?
To create stacked plot with density using ggplot2, we can use geom_density function of ggplot2 package and position="stack". For example, if we have a data frame called df that contains two columns say x and y, where x is categorical and y is numerical then the stacked plot with density can be created by using the command −
ggplot(df,aes(y,y=..density..))+geom_density(aes(fill=x),position="stack")
Example
Consider the below data frame −
> x<-sample(LETTERS[1:4],20,replace=TRUE) > y<-rpois(20,5) > df<-data.frame(x,y) > df
Output
x y 1 C 3 2 C 5 3 B 4 4 A 7 5 B 1 6 A 6 7 D 4 8 C 3 9 C 7 10 B 4 11 D 3 12 C 9 13 A 4 14 A 3 15 B 4 16 B 8 17 A 7 18 C 5 19 D 4 20 B 5
Loading ggplot2 package and creating stacked plot with density of y −
> library(ggplot2) > ggplot(df,aes(y,y=..density..))+geom_density(aes(fill=x),position="stack")
Output
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