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Re: Re: Re: Extracting contour values from ContourPlot

  • To: mathgroup at smc.vnet.net
  • Subject: [mg100848] Re: [mg100834] Re: [mg100808] Re: Extracting contour values from ContourPlot
  • From: Curtis Osterhoudt <cfo at lanl.gov>
  • Date: Tue, 16 Jun 2009 21:50:47 -0400 (EDT)
  • Organization: LANL
  • References: <h12gg4$ect$1@smc.vnet.net> <200906150119.VAA11428@smc.vnet.net> <200906150938.FAA24149@smc.vnet.net>
  • Reply-to: cfo at lanl.gov

Yup. Shows up here, too (7.0.0 on a linux system). It can be somewhat remediated by explicitly giving a relatively large (and odd) number of PlotPoints, like PlotPoints->99. The hole in the middle will be filled in--mostly.



On Monday 15 June 2009 03:38:25 am Syd Geraghty wrote:
> Hi,
> 
> After trying for a while to get the contour line 1  to be shown for  
> 0<x<~0.5 and 0<y<-0.5 with
> 
> ContourPlot[Cos[x*y], {x, -Pi, Pi}, {y, -Pi, Pi}]
> 
> It appears ContourPlot has a bug.
> 
> (The displayed contour line 1 is not symmetric in the vicinity of x=0,  
> y=0)
> 
> I wonder if its my system or others noticed this.
> 
> I am sending it to Mathematica Bugs for them to confirm.
> 
> Cheers ... Syd
> 
> 
> Syd Geraghty B.Sc, M.Sc.
> 
> sydgeraghty at mac.com
> 
> Mathematica 7.0.1 for Mac OS X x86 (64 - bit) (18th February 2009)
> MacOS X V 10.5.6
> MacBook Pro 2.33 GHz Intel Core 2 Duo  2GB RAM
> 
> 
> 
> On Jun 14, 2009, at 6:19 PM, Jens-Peer Kuska wrote:
> 
> > Hi,
> >
> > plt = ContourPlot[Cos[x*y], {x, -Pi, Pi}, {y, -Pi, Pi}];
> >
> > and
> >
> > Cases[plt, _Tooltip, Infinity] /. Tooltip[_, lbl_] :> lbl
> >
> > ?
> >
> > Regards
> >   Jens
> 
> 
> 


-- 
==================================
Curtis Osterhoudt
cfo at remove_this.lanl.and_this.gov
PGP Key ID: 0x4DCA2A10
==================================


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