我想将样本大小值与绘图上的点相关联。我可以用geom_text将数字放置在点附近，但这很混乱。将它们沿着地块的外边缘排列起来会干净得多。
例如，我有：
df=data.frame(y=c("cat1","cat2","cat3"),x=c(12,10,14),n=c(5,15,20))
ggplot(df,aes(x=x,y=y,label=n))+geom_point()+geom_text(size=8,hjust=-0.5)
Which produces this plot:
I would prefer something more like this:
我知道我可以创建第二个图并使用grid.arrange (a la 这个帖子）但是确定 textGrobs 的间距与 y 轴对齐会很乏味。有没有更简单的方法来做到这一点？谢谢！
现在对于 ggplot2 3.0.0 来说这很简单，因为现在可以使用以下命令在图中禁用剪切clip = 'off'坐标函数中的参数，例如coord_cartesian(clip = 'off') or coord_fixed(clip = 'off')。下面是一个例子。
# Generate data
df <- data.frame(y=c("cat1","cat2","cat3"),
x=c(12,10,14),
n=c(5,15,20))
# Create the plot
ggplot(df,aes(x=x,y=y,label=n)) +
geom_point()+
geom_text(x = 14.25, # Set the position of the text to always be at '14.25'
hjust = 0,
size = 8) +
coord_cartesian(xlim = c(10, 14), # This focuses the x-axis on the range of interest
clip = 'off') + # This keeps the labels from disappearing
theme(plot.margin = unit(c(1,3,1,1), "lines")) # This widens the right margin
