R help - Jul 2010 - Generating mp3s from lattice-made pdfs with animation package

I have generated a multi-page pdf with lattice. Now I want to make an mpeg3 file
animation from it. I have been experimenting with the 'animation'
package. The saveM ovie function will create an mp3 file, but it is not clear if
it will take a pdf as the 'expr' that generates animations.



Suggestions about use of the animation package, or other ways to animate lattice
output in an mp3 file, are appreciated

-Seth Bigelow 

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