Syntax error How to create bar plot with log values using ggplot2 in R?

How to create bar plot with log values using ggplot2 in R?

To create the bar plot using ggplot2, we simply need to use geom_bar function and if we want to have the log scale of y variable then it can be set with aes under geom_bar. For example, if we have a data frame called df that contains a categorical column x and a numerical column y then the bar plot with log of y can be created by using the below command −

ggplot(df,aes(x,y))+geom_bar(stat="identity",aes(y=log(y)))

Example

Consider the below data frame −

Live Demo

> x<-c("S1","S2","S3","S4")
> y<-sample(10000:99999,4)
> df<-data.frame(x,y)
> df

Output

   x     y
1 S1 53347
2 S2 84208
3 S3 12140
4 S4 59105

Loading ggplot2 package and creating bar chart for data in df −

> library(ggplot2)
> ggplot(df,aes(x,y))+geom_bar(stat="identity")

Output

Creating bar chart for data in df with log of y −

> ggplot(df,aes(x,y))+geom_bar(stat="identity",aes(y=log(y)))

Output

Updated on: 2021-03-05T06:23:39+05:30

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