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Re: Mathematica Animation Drives Me Crazy!

  • To: mathgroup at smc.vnet.net
  • Subject: [mg95697] Re: Mathematica Animation Drives Me Crazy!
  • From: Helen Read <hpr at together.net>
  • Date: Sun, 25 Jan 2009 06:51:04 -0500 (EST)
  • References: <15010445.1232628718537.JavaMail.root@m02> <gletl0$4tg$1@smc.vnet.net>
  • Reply-to: HPR <read at math.uvm.edu>

David Park wrote:
> This may be a platform dependent problem. In any case, I'm working on a
> 32-bit Windows Vista, Version 7.
> 
> Here are some typical results of repeated Trigger activation (Trigger
> controls omitted) with the first form of the Trigger example:
> 
> Module[{n = 0, nevals = 0, nlist = {}, calcnevals}, 
>  calcnevals[] := 
>   If[n == 0, nevals = 1; nlist = {n}, nevals = nevals + 1;
>    nlist = Append[nlist, n]];
>  {Trigger[Dynamic[n, (n = #; calcnevals[]) &], {0, 10, 1}], 
>   Dynamic[n], Dynamic[nevals], Dynamic[nlist]}]
> 
> 4,10,{0,1,1,1,2,2,2,3,3,4}
> 10,23,{0,1,1,1,2,2,2,3,3,3,3,4,4,4,5,6,7,7,8,8,9,10,10}
> 10,13,{0,1,2,3,4,5,6,7,8,9,9,10,10}
> 10,12,{0,1,2,3,4,5,6,7,8,9,10,10}
> 10,15,{0,1,1,2,3,4,5,6,7,7,8,8,9,10,10}
> 1,2,{0,1}
> 
> Notice that in the first and last case the animation 'froze' at n = 4 and n
> = 1. The first number is the last value of n, the second number is the
> number of values that were actually produced (it should be equal to 11) and
> the third item is the list of values produced, which should be
> {0,1,2,3,4,5,6,7,8,9,10}.
> 
> I would be very thankful if users on Windows Vista could try this out.

Here are the results of 10 consecutive trials (Mathematica 7, Windows 
Vista).

10,14,{0,1,2,3,4,4,4,5,6,7,8,9,10,10}
10,15,{0,1,2,3,3,4,4,4,5,6,7,8,9,10,10}
0,1,{0}
10,15,{0,1,2,3,4,5,5,5,5,6,7,8,9,10,10}
0,1,{0}
10,14,{0,1,2,3,3,4,4,5,6,7,8,9,10,10}
0,1,{0}
10,12,{0,1,2,3,4,5,6,7,8,9,10,10}
0,1,{0}
10,14,{0,1,2,2,2,3,4,5,6,7,8,9,10,10}

-- 
Helen Read
University of Vermont


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