[R] Distributional characteristics

Spencer Graves spencer.graves at pdf.com
Mon Sep 5 01:48:08 CEST 2005

	  I haven't seen a reply to your post, and I would like to help you. 
Unfortunately, I don't see a question in your email.  Please tell us why 
"changing the variable (x-1,ln(x)) didn't get satisfying results", 
preferably using a toy example that someone else can copy from your 
email in to R and test a couple if ideas in a matter of seconds.  I 
believe doing that will increase the chances that you will receive a 
quick and useful reply.  (And PLEASE do read the posting guide! 
"http://www.R-project.org/posting-guide.html".  Many people have found 
it quite helpful.)

	  spencer graves

Naji wrote:

> Hi all
> I've a continuous variable and I want to test (graphically, plotting
> observed and theoretical distr, qqplot) whether it follows some formal
> distribution. (some thing close to Ricci document : Fitting distributions
> with R, Feb05).
> The distribution I want to fit is a truncated Gamma at 1 (the minimal value
> is 1), P(x)=Pgamma(rate,x)/(1-Pgamma(rate,x<1))
> NB : changing the variable (x-1,ln(x)) didn't get satisfying results
> Best
> Naji
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Spencer Graves, PhD
Senior Development Engineer
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