Hi Robert, Try
set.seed(123) x <- seq(100) x <- sample(x, 1000, replace = TRUE) f <- ecdf(x) f(10) # [1] 0.099 f(71) # [1] 0.716 See ?ecdf for more information. HTH, Jorge.- On Tue, Jan 10, 2012 at 11:52 PM, Robert A'gata <> wrote: > Hello, > > I am not sure how to do this in R. Any suggestion would be > appreciated. I have a vector of values from where I build an empirical > CDF. For example: > > > x <- seq(1,100) > > x <- sample(x,1000,replace=T) > > quantile(x,probs=seq(0,1,.05)) > 0% 5% 10% 15% 20% 25% 30% 35% 40% 45% > 50% 55% > 1.00 5.00 10.00 16.00 20.00 25.00 31.00 36.00 41.00 45.55 > 50.00 56.00 > 60% 65% 70% 75% 80% 85% 90% 95% 100% > 60.00 65.00 70.00 74.00 80.00 85.00 91.00 95.05 100.00 > > I would like to write a function that takes in a number z and vector x > (i.e. the raw vector).It returns percentile of z wrt x. E.g. > > > f(71,x) > > Should return something around 0.708 or 0.709. I am wondering if there > is any pre-packaged functions that do this in R? If not, how can I > write such a function. Any suggestion would be appreciated. > > Robert > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
