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Animation looping glitch (confirmed)

  • To: mathgroup at
  • Subject: [mg35781] Animation looping glitch (confirmed)
  • From: AES <siegman at>
  • Date: Tue, 30 Jul 2002 07:22:48 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

Re a longer post I submitted recently:

Execute the following as the only (or final) contents of a notebook

    Do[Plot[x^k, {x,0,1}, PlotRange->{{0,1}, {0,1}}], {k,1,4}]

Then Select All cells (cmd-A);  Animate (cmd-Y);  and hit the up or down 
arrow keys a few times or click the vertical bars in the control strip 
to pause the animation.

Single-stepping the animation backward using the up/down? arrow key will 
now take you down to the k=1 plot, then loop back up to the k=4 plot.

Single-stepping the animation forward using the down/up? arrow key will 
take you up to the k=4 plot, but will NOT loop back down to the k=1 plot 
(although the free-running animation does seem to loop around OK).

Adding another cell (even a header or text cell) at the end of the 
notebook, however, so that there is another cell after the k=4 plot, 
will enable cyclic single-step looping in either direction around the 

[Mac PB G3, OS 9.1, Mathematica 4.1]

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