On Jan 18, 2008 9:23 AM, Ondrej Certik <[EMAIL PROTECTED]> wrote:
>
> Hi Fabio,
>
> On Jan 18, 2008 11:51 AM, Fabio Tonti <[EMAIL PROTECTED]> wrote:
> > Hello everyone,
> >
> > I've just been playing around with SymPy a bit more lately, and I found that
> > the 3D-Plot implementation is really nice!!!
> > Why isn't that the default plot3D-way for Sage command-line use?
>
> I think the main reason is just that noone has implement it yet. But see
> below.
>
> > I must say that I'm really looking forward to getting mayavi2 into Sage (I
> > know it's already there, but more stable, better supported). Still, I have
> > no experience with mayavi, and I think the symPy (pyglet) plotting
> > capabilities are very good. So in my opinion that should be the default
> > plot3D for command line use.
> > Of course for the notebook, there's been great work around jmol, and I like,
> > but it never worked for me from the command line (btw. java scares the ***
> > out of me).
>
> Speaking only for myself, I don't like java too. But I have a very
> narrow minded opinion here,
> I am sure others will not agree with me completely. I know it's GPL,
> but that's already
> more than a year (isn't it?), but it still isn't in Debian main, for
> some legal or technical problems.
> It is in non-free, so I can still install it with one command (apt-get
> install sun-java5-plugin) and it
> works out of the box in all browsers, but I am very picky, I don't
> want to depend on something
> that isn't in main (that includes Sage too for the moment). I hope
> Sage will get into Debian
> eventually, and java hopefully too. But I don't want to wait 30 years
> for that. :)
>
> So that's why I don't like java, but one shoud use the best tool to do
> the job. So we want 3D graphing
> in the browser that just works and I don't know any better solution
> than the one in Sage.
>
> But as to commandline, I think pyglet is a better solution than jmol,
> because pyglet can be made
> working for almost everyone (unlike java). But I remember that some
> people tried that on this list
> and had some problems too. It does work for me though, even in the old
> Sage 2.8.13. Try this:
>
>
> $ ./sage
> ----------------------------------------------------------------------
> | SAGE Version 2.8.13, Release Date: 2007-11-21 |
> | Type notebook() for the GUI, and license() for information. |
> ----------------------------------------------------------------------
>
> sage: from sympy import Plot, symbols
> sage: x, y = symbols("xy")
> sage: Plot(x*y)
> [0]: x*y, 'mode=cartesian'
> sage:
> Exiting SAGE (CPU time 0m1.18s, Wall time 0m16.36s).
>
>
> And it plots a graph in pyglet, through sympy.
These commands gave me a segfault (amd64bit, running 64bit feisty fawn):
[EMAIL PROTECTED]:~/sagestuff/sage-2.10.alpha1$ ./sage
----------------------------------------------------------------------
| SAGE Version 2.10.alpha1, Release Date: 2008-01-09 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
sage: from sympy import Plot, symbols
sage: x, y = symbols("xy")
sage: Plot(x*y)
[0]: x*y, 'mode=cartesian'
sage: Window initialization failed: No conforming visual exists
------------------------------------------------------------
Unhandled SIGSEGV: A segmentation fault occured in SAGE.
This probably occured because a *compiled* component
of SAGE has a bug in it (typically accessing invalid memory)
or is not properly wrapped with _sig_on, _sig_off.
You might want to run SAGE under gdb with 'sage -gdb' to debug this.
SAGE will now terminate (sorry).
------------------------------------------------------------
/home/wdj/sagestuff/sage-2.10.alpha1/local/bin/sage-sage: line 210:
4052 Segmentation fault (core dumped) sage-ipython -c
"$SAGE_STARTUP_COMMAND;" "$@"
[EMAIL PROTECTED]:~/sagestuff/sage-2.10.alpha1$
>
> So I think noone will be against accepting a patch, that adds an
> optional switch to the plot3d Sage command to use pyglet, if jmol is
> not available.
>
>
> Ondrej
>
>
> >
>
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