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Re: Mathematica Animations by High School Students

  • To: mathgroup at
  • Subject: [mg102023] Re: [mg101996] Mathematica Animations by High School Students
  • From: Murray Eisenberg <murray at>
  • Date: Mon, 27 Jul 2009 05:53:07 -0400 (EDT)
  • Organization: Mathematics & Statistics, Univ. of Mass./Amherst
  • References: <>
  • Reply-to: murray at

Neat stuff, and impressive for only 75 minutes' exposure to Mathematica.

As to export from Animate: even if one uses AnimationRepetitions -> 1 
that seems to be ignored in the exported video, as for example with:

   Animate[Plot[Sin[a x], {x,0,8Pi}], {a,0.1,2}, AnimationRepetitions->1]
   Export["wave.swf", %]

The exported video runs forever. (And likewise with Manipulate.)  The 
same thing happens even with:

   ListAnimate[Table[Plot[Sin[a x],{x,0,8Pi}],
   Export["newwave.swf", %]

This seems to be a bug.

Helen Read wrote:
> You might enjoy looking at some Mathematica animations created by a 
> group of 30 very bright high school students at the Vermont Governor's 
> Institute in Mathematical Sciences about a month ago. (I meant to post 
> the link here sooner, but am just now getting around to it.)
> The students had no previous exposure to Mathematica, and I had them for 
> only a single 75-minute session....
> One minor aggravation in all this: I find it baffling that exporting an 
> animation from Animate or Manipulate from Mathematica into any video 
> format results in the animation running forward and then backward. I 
> have not found any way to get it to export so that it runs once in the 
> forward direction only. The kids' animations look OK going forward and 
> back, but there some things we would really like to run in one direction 
> only. AnimationDirection->Forward doesn't do anything when you export, 
> as far as I can tell. 

Murray Eisenberg                     murray at
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
710 North Pleasant Street            fax   413 545-1801
Amherst, MA 01003-9305

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