ggplot: adding new data to the existing grouped boxplot
问题 I created a grouped boxplot with ggplot2. Now I want to add additional data to the existing plot in the following way: for each month I have one "Optimal" value that should be displayed as a dot and these dots should be connected by a line. This is the desired state: How could I add those dots and lines to my plot? Can I by any chance put the connecting lines behind the boxplots? Here is my current state and the data: Ggplot without dots : Data frame:Data frame R Code: data("MyData") MyData