In this tutorial, we will learn how to order facet variable in a grouped boxplot by mean difference between groups in each facet plot with ggplot2. We will use Palmer penguin dataset to make a grouped boxplot using facet_wrap() in ggplot2. Our data looks like this. First, let us make a grouped boxplot using facet_wrap().… Continue reading How to order facet variable in grouped boxplot by mean difference between groups in ggplot2