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Re: manipulate contourplot question

  • To: mathgroup at smc.vnet.net
  • Subject: [mg100682] Re: [mg100655] manipulate contourplot question
  • From: "David Park" <djmpark at comcast.net>
  • Date: Wed, 10 Jun 2009 20:36:40 -0400 (EDT)
  • References: <20324370.1244668662725.JavaMail.root@n11>

Use the PerformanceGoal option.

Manipulate[
 ContourPlot[
  a x^2 + 2 b x y + c y^2 + 2 d x + 2 f y + g == 0 /. {a -> 1, c -> 3,
      d -> 0, f -> 0, g -> -1} // Evaluate, {x, -5, 5}, {y, -5, 5},
  PerformanceGoal -> "Quality",
  PlotPoints -> 10],
 {{b, 0}, -5, 5}]


David Park
djmpark at comcast.net
http://home.comcast.net/~djmpark/  


From: van der Burgt, Maarten [mailto:Maarten.VanDerBurgt at icos.be] 

Dear all,

The following produces a smooth function. But when I hold and move the
slider the function appears jagged and is only fully drawn when I
release the slider.

I know this is done to show an initial result very fast. Is there a
method to influence this behavior?



Manipulate[

 ContourPlot[

  a x^2 + 2 b x y + c y^2 + 2 d x + 2 f y + g == 0 /. {a -> 1, 

     c -> 3, d -> 0,  f -> 0, g -> -1} // Evaluate, {x, -5,

   5}, {y, -5, 5}, PlotPoints -> 10], {{b, 0}, -5, 5}]



Thanks for your help,



Maarten





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