Re: Mac - problem with plotting

[Andrew Gibb]

Ben,

Thanks for your reply. To be explicit, I tried setting GNUTERM as an 
environment variable using a bash export command to each of X11, qt, or 
aqua. I then opened octave and did

 > x = linspace(0,5);
 > plot(x, sin(x))

Each time this returned

gnuplot> set terminal aqua enhanced title "Figure 1" size 560 420 font 
"*,6" dashlength 1
^
line 0: unknown or ambiguous terminal type; type just 'set terminal' for 
a list

Then I tried opening octave from a termial with GNUTERM unset, then 
tried using the octave command "set" to set GNUTERM to each of the same 
three values. Each time I call set GNUTERM, octave returns

error: invalid conversion from string to real N-d array
error: set: expecting graphics handle as first argument

Then doing
 > x = linspace(0,5);
 > plot(x, sin(x))

returns
gnuplot> set terminal aqua enhanced title "Figure 1" size 560 420 font 
"*,6" dashlength 1
^
line 0: unknown or ambiguous terminal type; type just 'set terminal' for 
a list
irrespective of what GNUTERM is set to. I hope that's a little clearer.


Here's the output from the commands you suggested (I installed fltk via 
homebrew and started a new terminal):

octave:1> close all
octave:2> set GNUTERM x11
error: invalid conversion from string to real N-d array
error: set: expecting graphics handle as first argument
octave:2> plot (rand (3))

gnuplot> set terminal aqua enhanced title "Figure 1" size 560 420 font 
"*,6" dashlength 1
^
line 0: unknown or ambiguous terminal type; type just 'set terminal' for 
a list

octave:3>


octave:3> close all
octave:4> graphics_toolkit fltk
error: graphics_toolkit: fltk toolkit is not available
error: called from:
error: 
/usr/local/Cellar/octave/3.8.1/share/octave/3.8.1/m/plot/util/graphics_toolkit.m 
at line 70, column 5
octave:4> plot (rand (3))

gnuplot> set terminal aqua enhanced title "Figure 1" size 560 420 font 
"*,6" dashlength 1
^
line 0: unknown or ambiguous terminal type; type just 'set terminal' for 
a list

octave:5>

Andy


Ben Abbott wrote:
> On Jul 8, 2014, at 12:27 PM, Andrew Gibb<address@hidden> wrote:
>
> > Hi,
> >
> > I can't seem to plot. I've just installed Octave using Homebrew on
> > Mac OS Mavericks. If I do:
> >
> > > x = linspace(0,5);
> > > plot(x, sin(x))
> > I get
> >
> > gnuplot> set terminal aqua enhanced title "Figure 1" size 560 420
> > font "*,6" dashlength 1
> > ^
> > line 0: unknown or ambiguous terminal type; type just 'set terminal'
> > for a list
> >
> > However,
> > octave:3> set terminal
> > error: invalid conversion from string to real N-d array
> > error: set: expecting graphics handle as first argument
> >
> > Which I guess is not what I should see.
> >
> > It is suspicious that the error message begins "set terminal aqua"
> > irrespective of the value of GNUTERM. The result is the same for
> > GNUTERM set to qt, aqua, or X11.
> >
> > The results are the same in the gui, or running Octave from a
> > terminal prompt.
> >
> > I have installed aquaterm via the dmg from sourceforge, and homebrew
> > has picked up the gnuplot dependency.
> >
> > Any ideas what's wrong here?
> >
> > Thanks
>
> It is likely that either your gnuplot was not compiled to plot using
> MacOS Aqua interface, or the Aquaterm libraries are not where gnuplot
> expects to find them. It is generally a good idea to build and install
> Octave and all its dependencies using Hombrew (including Aquaterm, and
> Gnuplot. However, since there is no Homebrew Aquaterm formula, you may
> be out of luck there).
>
> In any event, I realize you've said that GNUTERM has no effect, but
> you didn't say what you did.
>
> Please try the following commands from Octave's command line.
>
> close all
> set GNUTERM x11
> plot (rand (3))
>
> Also, there is good chance that the FLTK toolkit is supported. To find
> out, run Octave via the command line (this will not work from the GUI)
> and try ...
>
> close all
> graphics_toolkit fltk
> plot (rand (3))
>
> Ben