MathGroup Archive 2000

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

Search the Archive

ContourPlot doesn't work properly?


Let's take a common function like y=Exp[x]
If I try to make a picture of this function in an implicit way with 
ContourPlot in the form
ContourPlot[Log[y]-x,{x,-10,10},{y,-10,10}, 
PlotPoints->30,Contours->{0},ContourShading->False]

with the option PlotPoints->30 in order to have a more precise picture I 
obtain an error message:

    ContourGraphics::ctpnt:

    The contour is attempting to traverse a cell in which some of the

    points have not evaluated to numbers, and it will be dropped.

and no picture.

But if I let the option PlotPoints his default value the message is the 
same, but now the picture is drawn.

Could anyone explain what happens?

higra at gugu.usal.es


  • Prev by Date: Re: Levenberg-Marquardt ?
  • Next by Date: Re: PDE's?
  • Previous by thread: Re: Compiled
  • Next by thread: Re: ContourPlot doesn't work properly?