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Re: Manipulate Issue - resend with code


Use PerformanceGoal and maybe a lower value for MaxRecursions:

Manipulate[
 ContourPlot[
  q1/Norm[{x, y} - p[[1]]] + q2/Norm[{x, y} - p[[2]]], {x, -2, 
   2}, {y, -2, 2}, Contours -> 10,
  MaxRecursion -> 1,
  PerformanceGoal -> "Quality"],
 {{q1, -1}, -3, 3},
 {{q2, 1}, -3, 3}, {{p, {{-1, 0}, {1, 0}}}, {-1, -1}, {1, 1}, 
  Locator}, Deployed -> True]


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




From: Kevin J. McCann [mailto:kjm at KevinMcCann.com] 

Below is the "Neat Example" from the Manipulate Help. My issue is that 
when one of the charges is dragged around, the contour plot is really 
crummy, i.e. very low res, until you take your finger off the mouse. 
Similarly when the manipulate is allowed to run movie-style. Any ideas 
about how to get this to "look nice"?

Thanks,

Kevin


Manipulate[
  ContourPlot[
   q1/Norm[{x, y} - p[[1]]] + q2/Norm[{x, y} - p[[2]]], {x, -2,
    2}, {y, -2, 2}, Contours -> 10], {{q1, -1}, -3, 3}, {{q2, 1}, -3,
   3}, {{p, {{-1, 0}, {1, 0}}}, {-1, -1}, {1, 1}, Locator},
  Deployed -> True]




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