Eli Zaretskii <eliz <at> gnu.org> writes: > > > From: Lars Ericson <lars.ericson <at> wellsfargo.com> > > Date: Fri, 19 Oct 2012 19:51:22 +0000 (UTC) > > > > In Octave outside of Emacs I run the octave command "plot(1:10)" and it pops > > up a qt window and plots. Inside Gnu Emacs I run command esc-X run-octave and > > that runs an inferior mode Octave window which calls the same Octave.exe > > program. Inside that I do "plot(1:10)" and no Qt window pops up. I have > > tried the Octave command "graphics_toolkit gnuplot;" followed by "plot (1:10)" > > inside the Octave window, and that doesn't help. > > Does Octave need to see that its input is coming from a console, to be > able to pop up the window and plot? If so, that's the reason: on > Windows, Emacs subprocesses are run through a pipe, not a pty as on > Unix. > > If that's not the reason, then I suggest to ask on some Octave-related > forum, or maybe look in some FAQ, what could be the reason(s) for not > popping up that window. If you then describe those reasons here, > maybe someone could figure out why it happens in run-octave, and what, > if anything, can be done to work around that. > > > This was suggested in the following stackoverflow thread for Windows > > 7 (I am on XP): > > http://stackoverflow.com/questions/9468461/setting-up-octave-with-gnuplot- > > support-in-emacs > > That thread says that gnuplot doesn't work in Calc, which is wrong > since Aug 2009. Perhaps the person who said that uses an old Emacs > version. > >
The pipes idea is confirmed by Michael Goffioul on h...@octave.org. He says: Yes, that's most probably the problem. FLTK and Qt backend uses the readline event loop to run events and/or interact with the graphics backend. If readline is not used, like when running octave over pipes, those graphics backend won't work. You may force readline usage with the flags: --line- editing -i
