use of animated plot on jupyter-sage in a docker installation

[Francesco]

I have installed sagemath in a docker container . I have made a simple sagemath code like this:

sines = [plot(c*sin(x), (-2*pi,2*pi), color=Color(c,0,0), ymin=-1, ymax=1) for c in sxrange(0,1,.2)]

a = animate(sines)
a.show()

instead of obtaining an animation in the browser ( like a sagemath installed compiling from source ), i obtain an error message like this:

/opt/sage/local/lib/python2.7/site-packages/sage/repl/rich_output/display_manager.py:590: RichReprWarning: Exception in _rich_repr_ while displaying object: 
Error: Neither ImageMagick nor ffmpeg appears to be installed. Saving an
animation to a GIF file or displaying an animation requires one of these
packages, so please install one of them and try again.

See www.imagemagick.org and www.ffmpeg.org for more information.
  RichReprWarning,

Can you help me ?

Installing sagemath with docker is much faster then compiling from source !


[Francesco]

The code is for a jupyter notebook of course.

[Dima Pasechnik]

probably the container should have one of these packages installed.




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[Francesco]

Probably in a next release ? I hope

Il giorno giovedì 25 luglio 2019 09:59:52 UTC+2, Dima Pasechnik ha scritto:

On Wed, 24 Jul 2019 at 19:40, Francesco <francesco...@gmail.com> wrote:

I have installed sagemath in a docker container . I have made a simple sagemath code like this:

sines = [plot(c*sin(x), (-2*pi,2*pi), color=Color(c,0,0), ymin=-1, ymax=1) for c in sxrange(0,1,.2)]

a = animate(sines)
a.show()

instead of obtaining an animation in the browser ( like a sagemath installed compiling from source ), i obtain an error message like this:

/opt/sage/local/lib/python2.7/site-packages/sage/repl/rich_output/display_manager.py:590: RichReprWarning: Exception in _rich_repr_ while displaying object: 
Error: Neither ImageMagick nor ffmpeg appears to be installed. Saving an
animation to a GIF file or displaying an animation requires one of these
packages, so please install one of them and try again.

See www.imagemagick.org and www.ffmpeg.org for more information.
  RichReprWarning,

Can you help me ?

Installing sagemath with docker is much faster then compiling from source !

probably the container should have one of these packages installed.




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