如何在R中重用我的内核密度估计函数？

Question

I use density() to do KDE ,like

 #Rscript#
x <- c(rep(1,3),rep(2,4),rep(3,5))
density(x)

Am I suppose to get a probability density function? If so, How do I reuse it to obtain the probability of 1 value eg what is the probability of x<=2 P(x<=2) under my KDE function?

Tanks for sharing your idea!

Answer 1

Because density() gives you the continous KDE, the probability of an exact value is zero. You can only get some information like P(x <= 1). In your case hist() should be the correct selection.

EDIT: Please have a look here
https://stats.stackexchange.com/questions/78711/how-to-find-estimate-probability-density-function-from-density-function-in-r