R语言: 累积概率分布曲线

绘制累积概率分布曲线

plot(ecdf(aa))

1. 绘制常规概率密度曲线

aa <- rnorm(1000)

hist(aa, breaks = 20)  '#绘制概率分布直方图，示例一

plot.ecdf(aa, col="red")  #绘制累积概率分布，示例二

示例一
示例二

2. 绘制修饰概率密度曲线

> aa <- rnorm(20)

> hist(aa, breaks = 10)  #绘制直方图，示例2.1

> bb <- ecdf(aa)  #对数据进行统计
 
> bb  #查看统计结果
Empirical CDF 
Call: ecdf(aa)
 x[1:20] = -1.6175, -1.5902, -1.4019,  ..., 1.8859, 2.0029

> plot.ecdf(bb, do.points = T, verticals = T)  #示例2.2

> plot.ecdf(bb, do.points = T, verticals = F)  #示例2.3

> plot.ecdf(bb, do.points = F, verticals = T)  #示例2.4

> plot.ecdf(bb, do.points = F, verticals = F)  #示例2.5

2.1
2.2
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2.5