Newbie here again -- slightly better informed, since I've searched the
Trac items, and now found the "General FAQ" section of the Readme.html
that comes with Octave.app. However, I still can't get plotting to
work. Here's a quick recap of what I've tried:
1. Naively launched Octave.app right after installing it, tried to plot,
and it failed with basically "no gnuplot".
2. Installed gnuplot (after searching THEIR Trac system to learn why a
simple configure/make dance doesn't work on 10.4). Relaunched
Octave.app, tried to plot, got this:
octave-3.2.3:4> plot(x,t)
gnuplot> set terminal aqua enhanced title "Figure 1" size 560 420
^
line 0: unknown or ambiguous terminal type; type just 'set
terminal' for a list
line 0: No terminal defined
octave-3.2.3:5>
gnuplot> plot "-" binary format='%float64' record=3 using ($1):($2) axes
x1y1 title "" with lines linestyle 1 ;
^
line 0: use 'set term' to set terminal type first
3. Found the pointer to the General FAQ, which claims (incorrectly, in
my case) that if the "gnuplot" command works then it should work with
Octave. So I deleted my installation of gnuplot, and then followed
suggestion a, to install Gnuplot.app right next to Octave.app.
Restarted octave, and tried:
octave-3.2.3:1> x = [-pi:0.1:pi];
octave-3.2.3:2> plot (x, sin (x))
octave-3.2.3:3>
...which generates no error, but no plot either. (Incidentally, if I
double-click Gnuplot.app myself, and enter "plot sin(x)/x" into the
terminal window that appears, it also does nothing there.)
4. Went back to the Requirements section of the Readme.html, which claims:
Since Octave.app version 3.2.0 there i sno need to install Gnuplot
anymore because Octave.app comes with its first own graphical backend
cf. General FAQ about 'How can I switch between different graphical
backends?').
But there is no such question in the General FAQ, and I'm still clueless
as to how to switch between different graphical backends.
I'd really like to make a plot with Octave! Can anyone give me a clue?
Thanks,
- Joe
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