[R] Fitting a Pareto [was (no subject)]

[Prof Brian Ripley]

On Mon, 25 Aug 2008, tayyaba rafiq wrote:

>
> I am very new user of R project. Sir I am a research scholar. I am doing

Even the newest of users are expected to read and follow the posting 
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> work on fitting distributions. Actually sir I want to know that what 
> package is use to find parameters of pareto distribution by maximum 
> likelihood method. and i want to find these parameters from my 
> calculated data. Sir I am waiting for your positive response.

Package actuar provides a density function that you can use with fitdistr 
from MASS.  E.g.

> library(actuar)
> x <- rpareto(1000, 2, 3)
> library(MASS)
> fitdistr(x, dpareto, list(shape=1, scale=1))
      shape       scale
   1.7928750   2.4446281
  (0.1569442) (0.3108455)


> Thanks
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>
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-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595