Create a basic Stacked Bar graph

Introduction

We have already covered creating basic bar graphs here and how to color a bar chart here.

If we want to create stacked bar chart we will make use of the fill=”<categorical variable>“ argument in aes.

We will be working with the ggplot2::diamonds dataset, few rows of the data are:

diamond

We will create bar graph which shows the count for each category of diamond cut and create stacks based on clarity of diamond.

 
library(ggplot2)
# stack based on clarity
ggplot(data = diamonds) + geom_bar(mapping = aes(x = cut, fill = clarity))

And the output of above code is: stack basic bar

Thus we have successfully created basic stacked bar chart.