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Re: Convex hull in 3D

• To: mathgroup at smc.vnet.net
• Subject: [mg111662] Re: Convex hull in 3D
• From: Christopher Henrich <chenrich at monmouth.com>
• Date: Mon, 9 Aug 2010 05:14:45 -0400 (EDT)
• Organization: Noöspheres 'R' Us
• References: <i3gptp$35i$1@smc.vnet.net>

In article <i3gptp$35i$1 at smc.vnet.net>,
 "S. B. Gray" <stevebg at ROADRUNNER.COM> wrote:

> I'm pretty sure that a few years ago I downloaded a function that Eric 
> W. wrote to compute the CH of some points in 3D. He intended it to be a 
> temporary solution because Mathematica has CH only for 2D. I can't find it 
> now 
> and I need it. I have only a dozen or so random points and don't need 
> super speed.
> 
> Steve Gray

I submitted a set of packages for multidimensionl convex polyhedra to 
the Wolfram Library Archive: 
<http://library.wolfram.com/infocenter/MathSource/7034/>
I would advise that you convert your coordinates to rational numbers.
Then I think it would handle the problem you describe with satisfactory 
speed.

-- 
Christopher J. Henrich
chenrich at monmouth.com
http://www.mathinteract.com
"A bad analogy is like a leaky screwdriver." -- Boon