Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.soft-sys.math.mathematica > #1928

Re: Bug in ListContourPlot?

Show all headers | View raw

Hi,

same behavoir here (Ubuntu 64bit, Kernel crashes after 20 sec.).

I assume Mathematica runs into trouble while recognizing the tiny
differences of your coordinates when it tries to triangulate the points
to make an interpolation possible. Adding a bit perturbation to your
data helps on my machine (although there is of course the possibility
that the random pertubation is badly choosen by some incompetent random
generator):

data = {{0.42256875000000005`, 3091.38125`, 
     8.271213205043878`}, {0.42256875000000005`, 3092.00625`, 
     6.266039117378199`}, {0.4263187500000001`, 3091.38125`, 
     5.613752062730342`}, {0.4263187500000001`, 
     3092.00625`, -5.684341886080802`*^-14}, {0.4263187500000001`, 
     3092.63125`, 5.599651386371079`}, {0.43006875000000006`, 
     3092.00625`, 6.059667975471868`}} /. {x_, y_, 
     z_} :> {x + RandomReal[{-10^-10, 10^-10}], 
     y + RandomReal[{-10^-10, 10^-10}], z};
ListContourPlot[data]

Cheers
Patrick


On Thu, 2011-04-28 at 06:37 -0400, Barak Shoshany wrote:
> Please copy and paste this into a Mathematica notebook:
> 
> ListContourPlot[{{0.42256875000000005`, 3091.38125`,
>    8.271213205043878`}, {0.42256875000000005`, 3092.00625`,
>    6.266039117378199`}, {0.4263187500000001`, 3091.38125`,
>    5.613752062730342`}, {0.4263187500000001`,
>    3092.00625`, -5.684341886080802`*^-14}, {0.4263187500000001`,
>    3092.63125`, 5.599651386371079`}, {0.43006875000000006`,
>    3092.00625`, 6.059667975471868`}}]
> 
> When I execute this code on my computer (Mathematica v8.0.1, Windows 7
> x64), the Mathematica kernel hangs. Does this happen to anyone else as
> well?
> 
> Barak
> 

Back to comp.soft-sys.math.mathematica | Previous | Next | Find similar | Unroll thread

Thread

Re: Bug in ListContourPlot? Patrick Scheibe <pscheibe@trm.uni-leipzig.de> - 2011-04-30 09:52 +0000

csiph-web