On Thu, Sep 10, 2009 at 8:14 AM, Jason Grout
<jason-s...@creativetrax.com> wrote:
>
> x x wrote:
>>> I think the problem here is that .gif is not a recognized image format.
>>> Try .png instead.
>>>
>>
>> Thanks for the suggestion but p.save("Test.png") also doesn't work.
>>
>> The following code:
>> ------------
>> var('x,y,z')
>> p=implicit_plot3d(x*y+z^2==0, (x, -3, 3), (y, -3, 3), (z, -3,
>> 3),viewer='tachyon')
>> p.save?
>> ------------
>>
>> outputs:
>> -----------
>> File:
>> /home/niels/Desktop/n/install/sage/sage-4.1.1/devel/sage/sage/structure/sage_object.pyx
>>
>> Type: <type ‘builtin_function_or_method’>
>>
>> Definition: p.save(filename=’None’, compress=’True’)
>>
>> Docstring:
>>
>> Save self to the given filename.
>>
>> EXAMPLES:
>>
>> sage: f = x^3 + 5
>> sage: f.save(SAGE_TMP + '/file')
>> sage: load(SAGE_TMP + '/file.sobj')
>> x^3 + 5
>> -----------
>
>
> That's right. This has come up before---p.save() for 2d graphics tries
> to save an image. p.save() for 3d graphics doesn't try to save an
> image. It's an inconsistency. One way to get fix this is to override
> the 3d graphics save routine to do what the 2d graphics save routine
> does---look at the file extension and if it is a recognized image
> extension, save the image; otherwise, save a Sage sobj pickle. This is
> also why 3d things don't work with animate(). animate() expects to be
> able to do p.save('test.png') and have a graphic image test.png saved
> out to disk.
>
> You can save a 3d graphics by hand by plotting in jmol and either
> selecting "Get Image" next to the image, which converts to jpg, or if
> you're doing this from the command line, you can select File|Export from
> the java viewer that pops up. That's rather laborious for creating an
> animation, though.
>
> To get an image using tachyon, use show() with filename and viewer
> parameters:
>
> sage: show(sphere(), filename='test',viewer='tachyon')
>
> You can use that trick to make a .save() method for 3d graphics (maybe
> TransformGroup class or something?) that behaves like the 2d graphics
> save. Then animate should work.
>
> I don't have time to do this right now, but I think this should give
> someone enough information to be able to fix things if they are interested.
>
This bug was reported 1.5 years ago, and I made a trac tick for it
then (#2872).
http://trac.sagemath.org/sage_trac/ticket/2872
I'm amazed I haven't fixed it yet. So many bugs, so little time!
William
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