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Re: Animation

  • To: mathgroup at smc.vnet.net
  • Subject: [mg112655] Re: [mg112619] Animation
  • From: Alexei Boulbitch <alexei.boulbitch at iee.lu>
  • Date: Fri, 24 Sep 2010 05:39:37 -0400 (EDT)

  Try this

place = {{10, 4}, {10, 7}, {10, 5}, {9, 7}};

Animate[Graphics[{PointSize -> Large,
    Point[Drop[place, -(Length[place] - i)]]}, Frame -> True,
   PlotRange -> {{1, 10}, {1, 10}}], {i, 1, Length[place], 1}]


I have a table of coordinates eg place={{10, 4}, {10, 7}, {10, 5}, {9, 7}}

I want to make an animation of these points which adds them successively. so the following almost works (NB I know that ListAnimate would work as well and is possibly preferable)

Manipulate[
  Graphics[{PointSize ->  Large, Point[place[[i]]]}, Frame ->  True,
   PlotRange ->  {{1, 10}, {1, 10}}], {i, 1, 4, 1}]

in that it displays the points successively. bu what I want is for the preceding points to be left visible (so the number of points grows). Needless to say the above is a trivial example, in practice I could have 10s of thousands of points and so want to be careful not to create very large arrays.

Thanks



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Alexei Boulbitch, Dr. habil.
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