search for: ppcc

...;m still rather at a loss for finding information (the commands names can be rather arcane)so I'm just posting my question: I would like to estimate the shape coefficient of diverse distributions (Weibull, gamma and Tukey-Lambda specifically, but other could be of interest) - Does R have a PPCC utility to estimate such parameter?(maximum value of correlation coef) - If yes how does one retrieve the numerical value from the graph? (see graphical example below) - The retrieval of numerical values is also a problem for me from the probability plots.... Thank for any help! Anne

hi, I wrote a set of R functions for estimating what is the probability function that best fits a set of data. I wrote them based in this response: /http://tolstoy.newcastle.edu.au/R/help/03b/1714.html/ I extracted the relevant segment of the link above: //> PPCC <- function(shape, scale, x) { # only for weibull / + x <- sort(x) + pp <- ppoints(x) + cor( qweibull(pp, shape=shape, scale=scale), x)} / I clearly read, "/only for weibull"/ however I wrote similar functions for /normal, exponential, poisson, and lognormal. / Could someone sa...