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Create stacked bar plot for one categorical variable in an R dataframe.
To create stacked bar plot for one categorical variable in an R data frame, we can use ggplot function and geom_bar function of ggplot2 and provide 1 as the X variable inside aes.
For Example, if we have a data frame called df that contains a one categorical column say C and one numerical column Num then we can create the stacked bar plot by using the below command −
ggplot(df,aes(1,Num,fill=C))+geom_bar(stat="identity")
Example
Following snippet creates a sample data frame −
x<-c("Male","Female","Unknown")
Count<-c(45,38,20)
df<-data.frame(x,Count)
dfThe following dataframe is created
x Count 1 Male 45 2 Female 38 3 Unknown 20
To load ggplot2 package and create bar plot for values in df on the above created data frame, add the following code to the above snippet −
x<-c("Male","Female","Unknown")
Count<-c(45,38,20)
df<-data.frame(x,Count)
library(ggplot2)
ggplot(df,aes(x,Count))+geom_bar(stat="identity")Output
If you execute all the above given snippets as a single program, it generates the following Output −
To create stacked bar plot for values in df on the above created data frame, add the following code to the above snippet −
x<-c("Male","Female","Unknown")
Count<-c(45,38,20)
df<-data.frame(x,Count)
library(ggplot2)
ggplot(df,aes(1,Count,fill=x))+geom_bar(stat="identity")Output
If you execute all the above given snippets as a single program, it generates the following Output −
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