In this tutorial, we will learn how to annotate or highlight a specific cluster/group in R using ggplot2. We can use R package ggforce to annotate a select group as a circle or ellipse on a scatter plot. In this example, we will use geom_mark_ellipse() function to highlight a cluster on scatterplot. To annotate specific… Continue reading How to Annotate a Specific Cluster or Group in ggplot2