mailing-list for TeXmacs Users

["Khadga Karki" <address@hidden>]

Hi,

With 2d plots it makes sense to directly embed the plot to the session.
With 3d plots it might be better to write an application that allows one
to rotate, zoom .. other editing stuff and some buttons which allow the
user to embed the plot to the document. With gnuplot it might be best to
write a wrapper utility for wxt terminal which communicates in between
gnuplot and texmacs.

Cheers,
Khadga

> Hi,
>
> Thanks for this code. Please check with Andrey Grozin about the most
> appropriate way
> to include this into the Maxima plug-in. Arguably, all plots should be
> directly
> embedded into the sessions. However, with older versions of Maxima, 3D
> plots were
> drawn in a separate window, in which it was possible to rotate the plot
> with the mouse.
> Does this interface still exist, or is everything done with GNUplot
> nowadays?
> In the latter case, we should try to find a hack for embedding all plots
> into sessions,
> since separate windows then do not have any added value.
>
> Andrey: do you think that the plotting command can easily be intercepted
> on the Maxima side, so that plot2d is systematically replaced by our own
> plot command?
>
> Best wishes, --Joris
>
>
> On Fri, Aug 14, 2009 at 07:06:08PM -0700, bytecolor wrote:
>> Hello Paul and Khadga,
>>
>> Is this the correct thread for this? hrm...
>>
>> I'm the curious type, so I looked into this. Before you read any
>> further, this will not work on Windows.
>>
>> Gnuplot works because the session is sending commands directly to
>> Gnuplot, telling it to write to a .ps, as Paul mentioned. The Gnuplot
>> session then sends that .ps back to TeXmacs.
>>
>> A Maxima session, on the other hand, is talking to Gnuplot `through'
>> Maxima. You can tell Maxima to write to a .ps:
>>
>> plot2d(sin(x), [x, -5, 5], [gnuplot_term, ps]);
>>
>> This will write to ~/maxplot.ps by default on my Ubuntu box. But afaik,
>> the Maxima session has nothing coded to recognize this and send the .ps
>> back to TeXmacs.
>>
>> So, I wrote a Maxima .mac file that does this. It defines tmplot2d()
>> that behaves just as Maxima plot2d(). The difference is, it
>> automatically appends [gnuplot_term, ps] after you hit Return. It then
>> sends the .ps back to TeXmacs.
>>
>> It's a quick hack no doubt, but here is the code for texmacs.mac if you
>> are interested. Hope the leading whitespace is retained.
>>
>> /*
>> * Return a string:
>> *   PREFIX -> list items separated by SEP -> POSTFIX
>> */
>> join_items(prefix, lst, postfix, sep) := (
>>     len : length(newargs),
>>     outstr : prefix,
>>     for i:1 thru len do
>>      if equal(i, 1) then
>>             outstr : sconcat(outstr, newargs[i])
>>      else
>>             outstr : sconcat(outstr, sep, newargs[i]),
>>     sconcat(outstr, postfix)
>> )$
>>
>> /*
>>  * Append [gnuplot_term, ps] to a plot2d() command.
>>  * Output will be to maxplot.ps, by default.
>>  * This file is fed, along with control characters, back to TeXmacs,
>>  * ala tm_gnuplot.
>>  *
>>  * Can you say `kludge'? I knew that you could.
>>  */
>> tmplot2d([args]) := (
>>     newargs : append(args, [[gnuplot_term, ps]]),
>>     apply(plot2d, newargs),
>>     ttyoff : true,
>>     system("echo -n ^B; \
>>             echo -n verbatim:; \
>>             echo -n ^B; \
>>             echo -n ps:; \
>>             cat maxplot.ps; \
>>             echo -n ^E; \
>>             echo; \
>>             rm -f maxplot.ps"),
>>     ttyoff : false,
>>     /*join_items("plot2d(", newargs, ")")*/
>>     join_items("plot2d(", newargs, ")", ", ")
>> )$
>>
>> --
>> bytecolor (S. Edward Dolan)
>>
>>
>>
>>
>