Re: plotting in Octave

[Robert Fong-tom]

On Nov 22, 2008, at 3:41 AM, Ben Abbott wrote:

> On Nov 22, 2008, at 12:29 AM, Robert Fong-tom wrote:
>
> > I finally was successful in porting Octave via macports and all seems
> > to be well. However, now I can't plot. The error I get is:
> >
> > gnuplot: unable to open display ':0'
> > gnuplot: X11 aborted.
> >
> > I had this problem before when I had installed Octave via the binary
> > dmg file at SourceForge, and as far as I can tell the .profile, shown
> > below, file is correct. Any thoughts?
> >
> > # Make X11 the default
> > export GNUTERM=x11
> > robert-fong-toms-computer:~ robert$ cat .profile
> > # Make X11 the default
> > export GNUTERM=x11
> >
> > ##
> > # Your previous /Users/robert/.profile file was backed up as /Users/
> > robert/.profile.macports-saved_2008-11-20_at_19:39:45
> > ##
> >
> > # MacPorts Installer addition on 2008-11-20_at_19:39:45: adding an
> > appropriate PATH variable for use with MacPorts.
> > export PATH=/opt/local/bin:/opt/local/sbin:$PATH
> > # Finished adapting your PATH environment variable for use with
> > MacPorts.
> >
> >
> > # MacPorts Installer addition on 2008-11-20_at_19:39:45: adding an
> > appropriate DISPLAY variable for use with MacPorts.
> > export DISPLAY=:0
> > # Finished adapting your DISPLAY environment variable for use with
> > MacPorts.
> >
> > Bob
>
>
> What do you get when you type the following into Octave's window?
>
> system ("echo $DISPLAY");
> system ("echo $GNUTERM");
>
> For me, I get
>
> octave:4> system ("echo $DISPLAY");
> :0.0
> octave:5> system ("echo $GNUTERM");
> aqua
> octave:6>
When I type the above I get:

octave:1> system("echo $DISPLAY")
:0
ans = 0
octave:2> system("echo $GNUTERM")
x11
ans = 0

> I assume you are still running OSX 10.4.x ?
Yes, I am still running OS X 10.4.x
> I'm not familiar with what MacPorts installs for octave. Did you  
> start a Terminal window and type "octave" into it?
Yes
> Have you tried starting an xterm window and running octave from there?
Yes. Octave does not run. I get the error "Command not Found"
> You do have X11 installed correct?
Yes
> Ben

I don't know if you saw Carlo's response, but although I am running  
10.4.x, I tried starting X11 before plotting and it worked!!!

What do you suppose is happening?

How do I switch back to Aquaterm?

Bob
>