[R] Distribution Fitting with R

[David Carlson]

Try fitdistr in package MASS or fitdist in package
fitdistrplus or goodfit in package vcd.

Also

?shapiro.test
?ad.test
?chisq.test

There is also Vito Ricci's "Fitting Distributions with R" in
the contributed documentation for R at 

http://cran.r-project.org/doc/contrib/Ricci-distributions-en.p
df

------------------------------------
David L Carlson
Associate Professor of Anthropology
Texas A&M University
College Station, TX 77840-4352


-----Original Message-----
From: r-help-bounces at r-project.org
[mailto:r-help-bounces at r-project.org] On Behalf Of Paul Bernal
Sent: Monday, August 5, 2013 1:11 PM
To: Bert Gunter
Cc: r-help at r-project.org
Subject: Re: [R] Distribution Fitting with R

Hello Bert,

Thank you for your comments. I want to actually fit a formal
statistical
distribution to my data using the classical methodologies
(either Shapiro
Wilk, Anderson Darling, Chi-Square, etc.). Once I have fitted
a
distribution then I will start generating random numbers and
performing the
Monte Carlo Simulation.

That is the reason why!!

Best regards,

Paul


2013/8/5 Bert Gunter <gunter.berton at gene.com>

> Just sample with replacement from your empirical
distribution? See:
>
> ?sample ## note the "replace" argument
>
> Other than that, I do not understand what you mean by
"distribution
> fitting analysis."
>
> Cheers,
> Bert
>
> On Mon, Aug 5, 2013 at 10:55 AM, Paul Bernal
<paulbernal07 at gmail.com>
> wrote:
> > Hello everyone,
> >
> > Basically, I want to perform some distribution fitting
analysis to a
> > particular data that I have.
> >
> > So the data I will be working with is structured as
follows:
> >
> > *Vessel Size*                           *   Number of
Vessels*
> >          *Frequency*
> >
> > 1000-2000 TEUS
1000
> >                       1%
> > 2000-3000 TEUS
3000
> >                     15%
> > 3000-4000 TEUS
2750
> >                     10%
> > 4000-5000 TEUS
5700
> >                     30%
> >
> >
> > The field Vessel Size is a categorical one, specifying
what is the vessel
> > size category, then the field Number of Vessels tells me
how many vessels
> > are in each one of those vessel size categories and
frequency is just the
> > percentage of the total (this is just an example).
> >
> > How can I perform a distribution fit for this data? The
reason why I want
> > to fit a distribution is to then perform a Monte Carlo
Simulation with
> the
> > data.
> >
> > Any help will be greatly appreciated,
> >
> > Best regards,
> >
> > Paul
> >
> >         [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-help at 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.
>
>
>
> --
>
> Bert Gunter
> Genentech Nonclinical Biostatistics
>
> Internal Contact Info:
> Phone: 467-7374
> Website:
>
>
http://pharmadevelopment.roche.com/index/pdb/pdb-functional-gr
oups/pdb-biostatistics/pdb-ncb-home.htm
>

	[[alternative HTML version deleted]]

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and provide commented, minimal, self-contained, reproducible
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