From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 10267 invoked by alias); 8 Jul 2007 23:39:40 -0000 Received: (qmail 10259 invoked by uid 22791); 8 Jul 2007 23:39:39 -0000 X-Spam-Check-By: sourceware.org Received: from mail.cs.tut.fi (HELO mail.cs.tut.fi) (130.230.4.42) by sourceware.org (qpsmtpd/0.31) with ESMTP; Sun, 08 Jul 2007 23:39:36 +0000 Received: from spam2.cs.tut.fi (spam2.cs.tut.fi [130.230.4.7]) by mail.cs.tut.fi (Postfix) with ESMTP id 46996147B; Mon, 9 Jul 2007 02:39:34 +0300 (EEST) Received: from mail.cs.tut.fi ([130.230.4.42]) by spam2.cs.tut.fi (spam2.cs.tut.fi [130.230.4.7]) (amavisd-maia, port 10024) with ESMTP id 18894-13; Mon, 9 Jul 2007 02:39:33 +0300 (EEST) Received: from modeemi.modeemi.cs.tut.fi (modeemi.modeemi.cs.tut.fi [130.230.72.134]) by mail.cs.tut.fi (Postfix) with ESMTP id 745E1D67; Mon, 9 Jul 2007 02:39:31 +0300 (EEST) Received: from jolt.modeemi.cs.tut.fi (jolt.modeemi.cs.tut.fi [130.230.72.144]) by modeemi.modeemi.cs.tut.fi (Postfix) with ESMTP id 5C8CE2CB68; Mon, 9 Jul 2007 02:39:31 +0300 (EEST) Received: by jolt.modeemi.cs.tut.fi (Postfix, from userid 16311) id 1FF944F940; Mon, 9 Jul 2007 02:39:30 +0300 (EEST) Date: Sun, 08 Jul 2007 23:39:00 -0000 To: Brian Gough Cc: Jason Detwiler , gsl-discuss@sources.redhat.com Subject: Re: request for Poisson CDF inverse Message-ID: <20070708233930.GL24297@jolt.modeemi.cs.tut.fi> References: <87zm26a7dj.wl%bjg@network-theory.co.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <87zm26a7dj.wl%bjg@network-theory.co.uk> User-Agent: Mutt/1.5.11 From: shd@jolt.modeemi.cs.tut.fi (Heikki Orsila) Mailing-List: contact gsl-discuss-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gsl-discuss-owner@sourceware.org X-SW-Source: 2007-q3/txt/msg00010.txt.bz2 On Sun, Jul 08, 2007 at 10:54:48PM +0100, Brian Gough wrote: > At Thu, 5 Jul 2007 17:16:38 -0700, > Jason Detwiler wrote: > > I am looking to calculate the inverse of the CDF for the Poisson > > distribution. I noticed that many of the CDFs coded in gsl have > > inverse functions also coded, but this is not the case for the Poisson > > distribution (unfortunately for me). I would like to "request" these > > functions. I would try to contribute them myself, but I'm not > > confident I could code them to the standards of gsl. What are the > > chances of my wishes being fulfilled by another developer? > > Hello, > > Currently there aren't any inverses for the discrete distributions. Woud you consider a patch? I might convert the python code I posted into C, and make that the first discrete distribution having an inverse. -- Heikki Orsila Barbie's law: heikki.orsila@iki.fi "Math is hard, let's go shopping!" http://www.iki.fi/shd