Dear R users, Quick question on the use of ecdf for producing a cumulative distribution function.
After having produced a cumulative distribution using ecdf, I would like to extract the exact x-value for a given percentile. For example I can ascertain the 1st and 3rd quartile using the summary function: cawa.cdp <- ecdf(cawaocc$LEFF80) plot(cawa.cdp, ylab="Fn(x)") summary(cawa.cdp) But, I would like write a function so that I can produce multiple ecdfs for >100 separate distributions and then extract the x-value (in this case LEFF80) for a given percentile (e.g., 80) for each separate distribution. Then I could produce an average x-value for all the distributions for a given percentile. I hope this is not too confusing. Thank you for the help! -- Benjamin Zuckerberg Doctoral Candidate State University of New York College of Environmental Science and Forestry Illick 244A, 1 Forestry Drive Syracuse, New York 13210 Tele: (315) 470-6985 E-mail: [EMAIL PROTECTED] ______________________________________________ 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.
