R: How can I annotate a ggplot with a text box?
I am looking to add a small white text box, with custom text in the body of my ggplot plot. The text I want to add is to identify a horizontal line I am adding to the plot.
ggplot(cb_emp) + geom_point(aes(x = grossunits, y = rate, color = as.factor(outlier)) , alpha = 1/4) + scale_color_discrete(name ="Outcome", breaks=c(0, 1), labels=c("Not outlier", "Outlier")) + geom_hline(aes(yintercept = meancbrate)) + geom_vline(aes(xintercept = meanac) + annotate("text", x = max(grossunits), y = meancbrate, label = "avg rate")
Here is the plot I get:
Here is the plot I want (or something like this):
Please let me know if there is an easy way of achieving this.
Greatly appreciate the help!
You can simply change to
annotate("label", x = max(grossunits), y = meancbrate, label = "avg rate")
which will use
geom_label rather than
geom_text and so you get a rectangle around the label.