[R] power law distribution; making new distributions
spencer.graves at pdf.com
Thu Mar 3 01:58:48 CET 2005
You've cited one form of the Pareto distribution
(http://mathworld.wolfram.com/ParetoDistribution.html). A slightly
different form is available in Jim Lindsey's package "rmutil". This is
not available CRAN, but can be assessed by "www.r-project.org" -> search
-> "R site search" -> "Jim Lindsey's packages".
Regarding adding a new distribution to R, you can follow this
example from Lindsey or the skewed t distribution in package "skewt".
See the documentation on "Writing R Extensions". I don't know the
protocol for contributing something to CRAN.
hope this helps.
rcran.10.escoffier at antichef.net wrote:
>i have data which i think is coming from a power law
>distribution P(X > a) = c/a^k and i would like to find
>the exponent and constant. i would like it to use my
>experimental data to find c and k.
>also, if i would like to create a new distribution, is
>it easy to add to R, if so, how is that done?
>R-help at stat.math.ethz.ch mailing list
>PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
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