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Re: Manipulate Issue - resend with code

  • To: mathgroup at smc.vnet.net
  • Subject: [mg99645] Re: Manipulate Issue - resend with code
  • From: Helen Read <hpr at together.net>
  • Date: Sun, 10 May 2009 05:15:32 -0400 (EDT)
  • References: <gu3arm$t7i$1@smc.vnet.net>
  • Reply-to: HPR <read at math.uvm.edu>

Kevin J. McCann wrote:
> 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]

Include the option PerformanceGoal->"Quality" to make it "look nice" 
(though it will slow it down a little).


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


-- 
Helen Read
University of Vermont


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