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Animation example from does not work.

asked 2013-01-17 13:10:25 +0200

dxvxd gravatar image

I'm trying to run thisexample from I downloaded the source code and ran:

sage: load('')

sage: plt.savefig('foo.png')

The file, foo.png, contained an empty Cartesian plane. I also typed in the code verbatim into the Sage interpreter and had the same results. I am running Sage Version 5.5, Release Date: 2012-12-22 on Ubuntu 12.04.1 LTS. Any suggestions would be greatly appreciated!

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I'm not sure the png format can handle animations. Perhaps look at the matplotlib manual ( ) to try to export to a format which can handle the animation? It seems `ani` is the variable in which the animation is stored. Sage provides its own animation interface, for some nice examples see:

fidbc gravatar imagefidbc ( 2013-01-17 18:39:24 +0200 )edit

There is apng but I don't know if matplotlib can write apng. Also, not all browsers can display apng files.

ppurka gravatar imageppurka ( 2013-01-17 19:55:25 +0200 )edit

Sage's matplotlib version is old. Perhaps this might be the reason that this doesn't work.

Dima gravatar imageDima ( 2013-01-18 00:10:38 +0200 )edit

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answered 2013-01-19 16:51:19 +0200

I posted this answer in sage-support, but for completeness, I'll post it here as well. The following works for me:

sage: from animate_decay import *
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Asked: 2013-01-17 13:10:25 +0200

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Last updated: Jan 19 '13