问题
This question already has an answer here:
- Show frequencies along with barplot in ggplot2 5 answers
I want to plot frequency distribution of an [r] factor variable as a bargraph, where bars represent the frequency counts of the factor levels. I use ggplot2 to do that and there's no problem with that.
What I can't figure out is how to add frequency count labels to the bars in the bargraph. The syntax that I've tried is as follows:
ggplot(data, aes(x = factorvar)) + geom_bar(fill = "somecolor") + geom_text(aes(y = ???))
I think I thoroughly searched in stackoverflow and "R Graphics Cookbook" by W.Chang but I couldn't find any specific answer to what parameter should I match to "y" in the aesthetics of geom_text() above. I tried some variants like: (y = ..count..) but it didn't work.
I would appreciate any help. Thanks...
回答1:
ggplot(data=diamonds, aes(x=clarity)) +
geom_bar() +
geom_text(stat='count', aes(label=..count..), vjust=-1)
来源：https://stackoverflow.com/questions/26553526/how-to-add-frequency-count-labels-to-the-bars-in-a-bar-graph-using-ggplot2