[seqfan] Re: animations in Mathematica, OEIS kiosk

[Dale Gerdemann]

Dear Neil. Seq Fans,

You can make a sequence of .jpg image files in a variety of
programming languages and then put them together a movie, gif, slide
show, ... using a reasonably priced tool such as Quicktime 7 or free
Linux tools such as ffmpeg or mplayer.

I've used Java and Python for a recent sequence of YouTube videos that
use a Fibonacci strings to generate a rich variety of fractals and
fractal-like images. (For example:
http://www.youtube.com/watch?v=cTieKvj9_oE). I'd been planning to
announce these videos in this
list as soon as I could get one that I was completely satisfied with
(which wasn't happening very quickly). Anyway, this video was made
with Python/TKinter/PIL and converted using QuickTime 7. The video
contains many sequences that would make nice animated gifs. If you're
interested in any of these, then let me know. Maybe I can modify
something to your taste, as I did with the Fibonacci trees. And if you
are interested in some technical details, then have a look at the
description I wrote for
http://www.youtube.com/watch?v=B_ql1HnIPk0&NR=1. If anyone knows of
related work, please let me know, I've done these videos just for fun
and have very likely overlooked something.

Also, if anybody is interested in the Python code, just send an email.

Dale Gerdemann

On Wed, Jan 23, 2013 at 4:59 PM, Neil Sloane <njasloane at gmail.com> wrote:
> Dear Seq Fans, Two things:
> 1. I need a bit of help with an animation in Mathematica,
> 2. I need more help with the OEIS Kiosk
>
> 1. I want to make an animation that will work in an html file.
> It should produce (successively) these 6 lines:
> 1
> 1 3
> 1 3 5
> 1 3 5 7
> 1 3 5 7 9
> 1 3 5 7 9 11
>
> If I type the following in Mathematica then it works, sort-of:
>
> row1[n_] := Table[ 2i+1, {i, 0, n}]
> Animate[ row1[n], {n,0,5}, DefaultDuration -> 5, AnimationRepetitions -> 1 ]
>
> What I was trying to do was make an animated gif from this by typing
> Export[ "animation.gif", Animate[ row1[n], {n,0,6}, DefaultDuration -> 5,
> AnimationRepetitions -> 1 ] ]
> but that did not work.
>
> It doesn't have to be an animated gif, anything that will work in an html
> page
> when one clicks a button would work.
>
> 2. For a long time I've been thinking about making a kiosk or arcade game
> that would be in science museums around the world, based on the OEIS.
> It would challenge you to guess the next term, ask you to try to stump it
> with your sequence, teach you how to guess the next term, show you
> information about some famous sequences, show you animations of sequences,
> and so on.
>
> I'm thinking about doing a small pilot version in html, and if anyone is
> interested in helping, please write to me privately. The idea is that we
> would share the files using Google Drive, which I just installed on
> my computer.
>
> Neil
>
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