r - R histogram number of instances in each bin on plot

Question

I would like to see the number of instances for each bin show up on the graph as well

set.seed(1)
x<-rnorm(1:100)
hist(x)

Answer 1

尝试这个

set.seed(1)
x<-rnorm(1:100)
y <- hist(x, plot=FALSE)
plot(y, ylim=c(0, max(y$counts)+5))
text(y$mids, y$counts+3, y$counts, cex=0.75)

这使：

Answer 2

另一个更简单的解决方案是在hist(...)方法本身中使用labels=TRUE 。它将包括直方图中每个 bin 顶部的出现次数/计数。

但是，我建议始终在直方图中包含xlim和ylim。

代码：

 set.seed(1)
 x <- rnorm(1:100)
 hist(x, xlim = c(-3,3), ylim = c(1,30), labels = TRUE) 

Answer 3

这会自动发生。左边叫做“频率”