PDF/CDF 用matlab计算和绘图
2018年04月23日 21:36:57 liujie2462 阅读数:1565需要一点something new ,虽说PDF/CDF也不new,但还是先加着吧,我需要图的横坐标是非等间距的,例如下图
matlab的工具箱里自带工具(见下图红框),尝试了一下,出图的横坐标是等间距的,尝试更改,但是出了问题,所以还是算出来用origin画吧
代码以下
CDF:
c=[0.05 0.55 1.5 3.5 7.5 15 35 75];
N=hist(x,c);
cdf1=cumsum(N)/sum(N);
PDF:
c=[0.05 0.55 1.5 3.5 7.5 15 35 75];
[N,X]=hist(x,c);
N1=N./sum(N);
然后用origin画一下就行了。。
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