Hello all, In order to find the kernel smoothing density function of a 3 dimensional data-set, I wrote this code in R: library(ks)defect <-read.table(file.choose(),sep=",")hat <-kde(defect)pdf("SampleGraph.pdf")plot(hat,drawpoints=TRUE)dev.off() But I have problem in interpretation of the result..I don't see the estimated values for density function (I need to have the values of f to use it in another code). The other problem is that the pdf file is not created correctly..Although the plot is created in R window, when I want to open the pdf file, it says:There was an error opening this document. This file cannot be opened because it has no pages. [[alternative HTML version deleted]]