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MathGroup Archive 2007

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Re: Controlling display of frames in a movie

  • To: mathgroup at smc.vnet.net
  • Subject: [mg73391] Re: Controlling display of frames in a movie
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Thu, 15 Feb 2007 05:00:04 -0500 (EST)
  • Organization: Uni Leipzig
  • References: <equnlk$ih5$1@smc.vnet.net>
  • Reply-to: kuska at informatik.uni-leipzig.de

Hi,

you must render the frames in a list and than ShowAnimation[]
or the FrontEnd[] can show the frames and you can control
the frame rate.

For example

<< Graphics`Animation`

Block[{$DisplayFunction=Identity},
   frameList=Table[Plot[Sin[i*x],{x,0,2Pi}],{i,1,256}]
]

ShowAnimation[frameList];

Regards
   Jens

Alain Cochard wrote:
> Hello.  I'm trying to generate a kind of animation for which I control
> the display of the next frame.  In other words I'm trying to find the
> Mathematica equivalent to the following script:
> 
>    x=[1 2 3] ;
>    for n=1:4
>      f = x.^n ; 
>      plot(x,f)
>      pause
>    end
> 
> 'x' is the vector {1,2,3}; 'f' is another vector of same length (here
> obtained from x).  'plot(x,f)' simply plots f as a function of x, and
> then the 'pause' statement causes the loop to stop and wait for the
> user to strike any key before continuing, hence before plotting the
> next curve.
> 
> The natural way would seem to be using ShowAnimation, but I didn't
> find a way to control the occurrence of the next frame.  
> 
> Unless I'm missing something, using the basic (List)Plot command does
> not seem to be appropriate in view of the time it takes for the window
> to pop up --at least in the text based environment-- especially for
> use on a remote computer.
> 
> Besides, I still wouldn't know how to close a window and initiate the
> next.
> 
> Any hint?
> Thanks in advance,
> Alain
> 


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