MathGroup Archive 1999

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

Search the Archive

ContourPlot problem

  • To: mathgroup at smc.vnet.net
  • Subject: [mg15445] ContourPlot problem
  • From: Pedro A Santos <pasantos at nospammath.ist.utl.pt>
  • Date: Mon, 18 Jan 1999 04:21:47 -0500
  • Organization: I.S.T. - Portugal
  • Sender: owner-wri-mathgroup at wolfram.com

Hello,

When I give the command

ContourPlot[(1-Exp[-1/((x)^2+(y)^2)/10]),{x,-1.0,1.0},{y,-1.0,1.0},
  PlotPoints ->{50,50},
  Contours -> {.1,.2,.3,.4,.5,.6,.7,.8,.9,.99, .99999999},
  ContourShading ->False]

I get what would be to expect, i.e. all the contours. But if I change
slightly the domain,
say  "{x,-1.1,1.1},{y,-1.1,1.1}", the majority of the contours
disappear. And they do not appear even if I increase PlotPoints to 200
or more.

Does anybody know the reason of this strange behaviour? And how to avoid
it?

Thanks in advance,


Pedro Santos



  • Prev by Date: Re: using Part command
  • Next by Date: Parts of a list
  • Previous by thread: Re: Symbolic Derivative of Piecewise Contin Fcn
  • Next by thread: Re: ContourPlot problem