Mathematica 9 is now available
Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2008

[Date Index] [Thread Index] [Author Index]

Search the Archive

RE: Coordinates of vertices

  • To: mathgroup at smc.vnet.net
  • Subject: [mg87772] RE: [mg87720] Coordinates of vertices
  • From: "King, Peter R" <peter.king at imperial.ac.uk>
  • Date: Wed, 16 Apr 2008 22:31:12 -0400 (EDT)
  • References: <OFD482F44A.E0878572-ONC125742D.00375EA0@icos.be>

Many thanks to all those suggesting using PolyhedronData. Unfortuantely
I forgot to mention that I was using version 5.1 so I don't think I have
access to that. My fault. Any other suggestions?

> -----Original Message-----
> From: Maarten van der Burgt [mailto:maarten.vanderburgt at icos.be]
> Sent: 16 April 2008 11:08
> To: King, Peter R
> Cc: mathgroup at smc.vnet.net
> Subject: Re: [mg87720] Coordinates of vertices
>
>
> Peter,
>
> The vertices are in the graphics object.
> Just use [[ ]] to get them out.
>
> tc=Truncate[PolyhedronData["Cube"]]
> vertices=ph[[1,1]]//N
> ListPointPlot3D[vertices ,BoxRatios->Automatic]
>
> Hope this helps,
>
> maarten
>
>
>
>                                                              
>                                                              
>                       
>                     "King, Peter R"                          
>                                                              
>                       
>                     <peter.king@imper        To:    
> mathgroup at smc.vnet.net                                       
>                                
>                     ial.ac.uk>               cc:             
>                                                              
>                       
>                                              Subject:    
> [mg87720] Coordinates of vertices                            
>                           
>                     16/04/2008 11:02                         
>                                                              
>                       
>                                                              
>                                                              
>                       
>                                                              
>                                                              
>                       
>
>
>
>
> I am sure I have done this before but I can't for the life of me
> remember how, and I can't find it in the manual. Some help
> would be much
> appreciated. I'd like to find the coordinates of the vertices of a
> truncated cube.
>
> Whilst Vertices[cube] correctly gives me the coordinates of a cube
> Vertices[Truncate[Polyhedron[Cube]]] doesn't do what I want because
> Truncate[Polyhedron[... is a graphics object not a polyhedron
> object. So
> can I convert the graphics object into a polyhedron and use
> vertices, or
> work out the vertices some other way (for a cube this is trivial to do
> but for more complicated shapes this is much more tedious)
>
> Thanks,
>
> Peter
>
>
>
>
>
>
>


  • Prev by Date: Re: Documentation Center Tutorial
  • Next by Date: Re: Re: A Problem with Simplify
  • Previous by thread: Re: Coordinates of vertices
  • Next by thread: RE: Coordinates of vertices