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MathGroup Archive 2004

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AW: RE: ListPlot3D with holes

  • To: mathgroup at smc.vnet.net
  • Subject: [mg47893] AW: [mg47820] RE: [mg47796] ListPlot3D with holes
  • From: "Holger Linde" <holger.linde at epost.de>
  • Date: Thu, 29 Apr 2004 19:39:39 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,
I found out by chance that if you fill the list with a non-defined variable
for those points where no solution exists, then PlotList3D will complain
but still continue to plot. This will result in a plot with true gaps.

Holger

>-- Original Nachricht --
>Date: Thu, 29 Apr 2004 00:33:37 -0400 (EDT)
>From: "Owen, HL (Hywel)" <H.L.Owen at dl.ac.uk>
To: mathgroup at smc.vnet.net
>To: mathgroup at smc.vnet.net
>Subject: [mg47893] [mg47820] RE: [mg47796] ListPlot3D with holes
>
>
>One way round it is to query whether your Solve has produced a solution
>using an If[] and look for an empty set {} to see if no solution has been
>found. If there is no solution, then put {0} in your list instead of {}.
>You'll now see 'holes' in the plot where there is no solution.
>
>Hywel
>
>> -----Original Message-----
>> From: holger.linde at epost.de [mailto:holger.linde at epost.de]
To: mathgroup at smc.vnet.net
>> Sent: 27 April 2004 09:47
>> To: mathgroup at smc.vnet.net
>> Subject: [mg47893] [mg47820] [mg47796] ListPlot3D with holes
>> 
>> 
>> Hello,
>> I've plotted a two dimensional list with ListPlot3D, but now I've run
>> into trouble because for parts of this list, no values exist. (Imagine
>> that the list values are gained from an equation system, and in some
>> cases, no solution exists). I.e., the definition domain is not
>> continuous, but has 'holes'. My goal is to retrieve a 3D plot where
>> these points are left out. Any ideas?
>> 
>> Regards,
>> Holger
>> 
>






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