On Wed, Dec 17, 2008 at 10:58 AM, Robert Dodier <robert.dod...@gmail.com> wrote:
>
> David Joyner wrote:
>
>> Doesn't maxima call gnuplot, unless you specify some options?
>> Do you have that installed (for example, using sage -i ...)?
>
> plotdf renders its display via Openmath (included in Maxima)
Thanks, I didn't know this.
> which is a Tcl/Tk program. If Xmaxima (user interface) is included
> with Maxima, then Openmath should be present. I don't know if
> Sage installs Tcl/Tk, maybe you have to do that separately.
akkogve:
You can either install tcl/tk in Sage (which is slightly non-trivial)
or just install
the system tcl/tk, which I'm sure is some rpm easy to install in Fedora.
I think it should work after that. Please report if this doesn't solve
the problem.
>
>> On Wed, Dec 17, 2008 at 6:41 AM, akkogve <akko...@gmail.com> wrote:
>
>> > When I try to plot a slopefield with maxima (inside sage) I get the
>> > cryptic message "127".
>
> It seem likely this is a Unix process exit code which indicates
> failure.
>
>> > load("plotdf")
>
>> > plotdf([x-8*y, -x-y])
>
> FWIW this displays a direction field as expected when I try it
> (cvs Maxima + ECL + Linux).
>
> Maybe there is some other way to plot a direction field in Sage.
>
> best
>
> Robert Dodier
>
> >
>
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