On 01/06/2018 23:40, Erik Bray wrote:
On Friday, June 1, 2018 at 3:32:19 PM UTC+2, Francesco wrote:
Hello everyone.
My installation is Sage 8.2 and windows 10 64bit, with imagemagick and
ffmpeg installed. I send these commands to sage: ( an example of reference
manual )
sage: 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)]
sage: a = animate(sines)
sage: a.show()
after the last command sage tells:
convert.exe: unable to open image
'/dot_sage/temp/DESKTOP-JPA9NBD/7980/tmp_xZEVL6.gif': No such file or
directory @ error/blob.c/OpenBlob/3335.
/opt/sagemath-8.2/local/lib/python2.7/site-packages/sage/repl/rich_output/
display_manager.py:590: RichReprWarning: Exception in _rich_repr_ while
displaying object:
Error: Cannot generate GIF animation. Verify that convert
(ImageMagick) or ffmpeg is installed, and that the objects passed to
the animate command can be saved in PNG image format.
See www.imagemagick.org and www.ffmpeg.org for more information.
RichReprWarning,
Animation with 5 frames
But imagemagick and ffmpeg are installed!
Is it a bug ?
I don't know. How did you install imagemagick and/or ffmpeg?
From the error message, the problem does not seem to come from
a problem with the program (convert.exe). Rather the "cygwin" version of
the path "/dot_sage/temp/DESKTOP-JPA9NBD/7980/tmp_xZEVL6.gif"
seems not understood. Could it be possible that
convert.exe would like something like C:/path/to/my/gif?
Erik, is there a straightforward path conversion cygwin <-> windows?
(I didn't even now Sage did anything with these--are they optional
packages?)
These are not optional packages, but since recently they are "features"
https://trac.sagemath.org/ticket/25305
Vincent
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