Amina, If you can follow this code, you will see that the black dots scatter around an L-skew of zero and L-kurtosis of 0.122602, which are the theoretical L-moments of the standard normal distribution.
library(lmomco) lmrdia <- lmrdia() plotlmrdia(lmrdia,ylim=c(-.2,.2),xlim=c(-.2,.2)) lms <- lmoms(rnorm(500)) points(lms$ratios[3],lms$ratios[4],pch=16) lms <- lmoms(rnorm(500)) points(lms$ratios[3],lms$ratios[4],pch=16) lms <- lmoms(rnorm(500)) points(lms$ratios[3],lms$ratios[4],pch=16) lms <- lmoms(rnorm(500)) points(lms$ratios[3],lms$ratios[4],pch=16) Further interpretion of the diagram is well documented in Hosking's 1990 paper and the references shown on the help page. William On Dec 4, 2006, at 12:05 PM, Eric Thompson wrote: > I think there are a few packages for doing this. I have used "lmomco": > the function lmom.ub() will calculate the sample lmoments, and > lmrdia() gives theoretical lmoments for different distributions. > > Hope this is helpful. > > Eric > > > On 12/4/06, amna khan <[EMAIL PROTECTED]> wrote: >> Respected Sir >> >> I have to select a probability distribution using L-moment Ratio >> Diagram. I >> am not understanding how to plot sample TAU3 and TUA4 on L-moment >> Ratio >> Diagram. >> Please Guide me >> Best Regards >> >> -- >> AMINA SHAHZADI >> Department of Statistics >> GC University Lahore, Pakistan. >> Email: >> [EMAIL PROTECTED] >> [EMAIL PROTECTED] >> [EMAIL PROTECTED] >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> R-help@stat.math.ethz.ch 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. >> > > ______________________________________________ > R-help@stat.math.ethz.ch 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. ______________________________________________ R-help@stat.math.ethz.ch 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.