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Message-ID: <00cf01c36260$4434a870$1601a8c0@andreywin>
To: "Moriyoshi Koizumi" <moriyoshi@at.wakwak.com>
Cc: <internals@lists.php.net>
References: <012c01c3600b$753bdcb0$1601a8c0@andreywin> <20030812040833qlrG12@at.wakwak.com>
Date: Thu, 14 Aug 2003 15:33:29 +0300
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Subject: Re: [PHP-DEV] [PECL-PROPOSAL] stats
From: andrey@php.net ("Andrey Hristov")

 Moriyoshi,
I forgot to say that examples most probably will be available soon
 written by Ed Luschei. He uses GD for visualisation.

Andrey

----- Original Message -----
From: "Moriyoshi Koizumi" <moriyoshi@at.wakwak.com>
To: "Andrey Hristov" <andrey@php.net>
Cc: <internals@lists.php.net>
Sent: Monday, August 11, 2003 10:08 PM
Subject: Re: [PHP-DEV] [PECL-PROPOSAL] stats


> As I can imagine some examples that demonstrate dynamic graph drawing with
> ming or gd, I think it'd be cool to have.
>
> However, I looked at dcdflib.c and only found it was coded not in C but in
> pseudo Fortran. That's worth a glance :) So the last concern is its
> stability, since it simply uses static variables in the application-level
> context (not in a thread-local context). This is fixable though.
>
> Moriyoshi
>
> "Andrey Hristov" <andrey@php.net> wrote:
>
> >  Hi,
> > few months ago I developed a wrapper around 2 scientific libraries.
> > DCDFLIB (Library of C routines for Cumulative Distributions Functions,
> > Inverses, and Other parameters)(by Barry Brown and James Lavato)
> > and RANDLIB (by Barry Brown, James Lavato and Kathy Russell).
> > I was asked to create the wrapper by a Mr. Ed Luschei from University
> > of Wisconsin - Madison WI. He is a weed ecologist. The site of the
> > "Weed ecology" group is :
> > http://weedecology.wisc.edu/ . The wrapper is available here :
> > http://www.hristov.com/andrey/projects/php_stuff/stats/
> > and can be downloaded from this url :
> > http://www.hristov.com/andrey/projects/php_stuff/stats/stats.tgz
> > There is previous an effort to wrap the library by 2 scientist of UCLA :
> > Arno Ouwehand and Jan de Leeuw . Their implementation however is worse
> > since they do not validate the input parameters. In their code there
> > are available numerous problems that may lead to segmentation fault.
> > Thus I decided to rewrite the wrapper and use different function names
> > according to PHP's coding convention for function naming.
> > The documentation of the 2 UCLA's scientist can be used as reference :
> > http://www.jstatsoft.org/v02/i01/statistics.pdf .
> > I propose this wrapper to be added to PECL.
>
> > Any comments/suggestions are welcome!
> >
> > Thanks,
> > Andrey Hristov
>