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Hi, a very useful feature of a Maxima session in TeXmacs is the ability to
display a 3d or 2d plot with, e.g., the plot3d command. During a session
today, something went wrong, and a 3d plot, which one can normally rotate in
3 dimensions by dragging, froze, and I closed the plot window, which is
always a GNUplot window. And now, for no apparent reason, the same commands
as before no longer produce the GNUplot window: the plot command completes in
the normal way, the only difference is that the GNUplot window never appears.
Ending the Maxima session and starting a new one, starting a new TeXmacs
file, closing the TeXmacs window and opening a new one, and rebooting the
computer all bring no improvement. I presume that somehow that seemingly
minor mishap during that session today must have damaged a configuration
file. The only likely files I can find, that have been modified today,
presumably automatically by TeXmacs, are:

.TeXmacs/system/interactive.scm

This is fairly large for a "system" file, 31552 bytes, apparently
automatically updated while I was working in TeXmacs, and containing a great
morass of "history", but not in any sort of chronological order, and I can
see the filename of a new TeXmacs file I created this evening, fairly near
the start.

.TeXmacs/system/cache/validate_cache.scm

This is also fairly large for a "system" file, 38395 bytes, and has also
apparently been automatically updated while I was working on TeXmacs this
evening, and there is a line:

"/home/chris/TeXmacsBuild15/share/TeXmacs/plugins/gnuplot/langs/natural" "0"

near the start. (The strange start to the path, i.e.
/home/chris/TeXmacsBuild15 instead of /usr, is because I have this build of
TeXmacs 1.0.7.15 installed in my home directory and run from there, so as not
to interfere with an older version that is installed in the usual place. In
fact I never use the older version, so that is not the problem. I have been
running this build of 1.0.7.15, installed in my home directory, for several
years now, so that is not the problem either.)

Could the above line, perhaps the "0" at the end, be the problem? I don't
really want to interfere with these automatically generated files, whose
format and purpose I don't understand. Would it do any serious damage if I
deleted one or both of these files, or replaced them by empty files? Or
could the problem be in some other automatically modified file, that I
haven't found? Thanks for any help, Chris Austin.

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• [TeXmacs] GNUplot window suddenly no longer appears in Maxima session, Chris Austin, 10/27/2014
  • Re: [TeXmacs] GNUplot window suddenly no longer appears in Maxima session, Chris Austin, 10/27/2014
  • Re: [TeXmacs] GNUplot window suddenly no longer appears in Maxima session, Miguel de Benito Delgado, 10/29/2014

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