p+coord_cartesian(xlim=c(5, 20), ylim=c(0, 50)):笛卡尔坐标系，这是设定修改不会删除数据 p+scale_x_log10(),p+scale_y_log10(): 绘图时对x，y取10 ...

Labeling all or some of your data with text can help tell a story — even when your graph is using other cues like color and size. ggplot has a couple of built-in ways of doing this, and the ggrepel ...

The ggplot2 data visualization R package is extremely powerful and flexible. However, it’s not always easy to remember how to do every task – especially if you’re not a frequent user. How do you ...