Re: Definition of new distribution
- To: mathgroup at smc.vnet.net
- Subject: [mg94661] Re: Definition of new distribution
- From: Bill Rowe <readnews at sbcglobal.net>
- Date: Fri, 19 Dec 2008 07:24:17 -0500 (EST)
On 12/18/08 at 7:22 AM, janostothmeister at gmail.com (janos) wrote: >I wonder if I can define a new cotinuous or discrete distribution, >to make it possible to use it in the same way as the built-in ones. >I can define e.g. CDFGeneralizedExtremeValueDistribution, or >PDFGeneralizedExtremeValueDistribution, but not the distribution >itself. FullForm of a known distribution does not help either. >Should I use it in an earlier version of Mathematica, where the >distributions came form a package, therefore you could see the >structure of the definition? >Could you give me some better advice please? I would suggest examining the code in packages that provided this functionality in version 5. It seems to me once you see how this would provide a good start toward generating your own distribution functions that behaved in a similar manner. Another possibility is the package MathStatica. This is a third party commercial package which unfortunately has not been updated yet to work with either version 6 or version 7 of Mathematica. But it did provide a means to define your own distributions. Details can be found at <http://www.mathstatica.com> The web site indicates a version compatible with version 6 and 7 of Mathematica is expected in the next 4 weeks. However, the date such a version is to be available has steady moved into the future over the past year. Consequently, I've no real confidence this latest estimate will be true.