On Mar 15, 2011, at 12:23 PM, Lathouri, Maria wrote:

Actually I have already done a search on that but it was not much of a help. That is why I posted it in the r-help in case it was much more helpful.

There is a tutorial by Ricci with the exact title I suggested looking for. At the Baron website a search on that quoted string brought up about 40 hits, most of them relevant, and one of them was from Ricci with a link to his tutorial. The tutorial has one of its early examples fitting a Weibull function.

--
David.

Thank you.

Kind regards
Maria

________________________________________
From: David Winsemius [dwinsem...@comcast.net]
Sent: 15 March 2011 16:19
To: Lathouri, Maria
Cc: r-help@r-project.org
Subject: Re: [R] fitting a distribution to a ecdf plot

On Mar 15, 2011, at 12:00 PM, Lathouri, Maria wrote:

Dear all,

I need to plot an cumulative distribution plot of a variable and
then to fit a distribution to that, probably a weibull or lognormal.

I have plotted the ecdf as
plot(ecdf(x))

but I haven't managed to fit the distribution. I have as well
attached the data.

Try a search on one of the R search sites with:

"Fitting distributions with R"  # use the quotes



I would appreciate if you could help me on that.

Thank you.

Kind regards
Maria
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David Winsemius, MD
West Hartford, CT

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