Color a Bar Graph

Introduction

We have already covered creating basic bar graphs here.

If we want to color each individual bar with a color we will use the “fill” argument in aes(…) function.

Procedure

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

We will create basic bar graph which shows the count for each category of diamond cut and color each bar with different color.

Code

 
library(ggplot2)
# create bar graph for cut and fill color based on cut variable
ggplot(data = diamonds) + geom_bar(mapping = aes(x = cut, fill = cut))

And the output of above code is:

Conclusion

Thus we have successfully filled color for bar chart.

References

• https://r4ds.had.co.nz/