Re: more mxe testing

[Daniel J Sebald]

On 02/22/2013 08:01 AM, Ben Abbott wrote:
> On Feb 22, 2013, at 8:30 AM, Mike Miller wrote:
>
> > On Fri, Feb 22, 2013 at 8:14 AM, Ben Abbott wrote:
> >
> > > On Feb 22, 2013, at 7:28 AM, Mike Miller wrote:
> > >
> > > > octave:1>  figure (1, "visible", false);
> > > > octave:2>  sombrero
> > > > octave:3>  drawnow ("windows", "/dev/null", false, "foo.gp")
> > > >
> > > > Does not return, there is no foo.gp file created. Ctrl-C 3 times exits Octave.
> > >
> > > My guess is that Octave isn't able to run gnuplot?
> > >
> > >  From Octave's prompt, what is needed to run gnuplot from the command line?
> > >
> > > On *nix, I'd just  ...
> > >
> > >         system ("gnuplot")
> > >
> > > What is needed for Octave running via wine?
> >
> > Same, system ("gnuplot") works fine, gives me the gnuplot interactive
> > shell, from which I can "plot sin(x)" fine, exit returns control back
> > to Octave, no problems.
> >
> > --
> > mike
>
> I assume the gnuplot is a windows/wine app?
>
> My guess is that the pipe between Octave and gnuplot isn't working properly.
>
> Ben

Hmm, I should have thought a bit more about that.  The program probably 
freezes with the "sombrero" command and doesn't get to run the 
"drawnow()" command.  That's the case, correct Mike?

Does Windows have something analogous to process IDs on linux?  I think 
it does, something like Cntrl-Alt-Del, right?  Can you open such a 
window, run the "sombrero" command and watch if a "gnuplot" process 
shows up in the list?

I'm trying to think of some way to create a real rudimentary plot that 
sends a minimal amount of data across the pipe.

It could be the pipe, but I'm also wondering if gnuplot might be 
crashing.  (If it is, and Octave is freezing as a result, that's not 
very robust...but first must identify problem.)  Could you run "gnuplot" 
(not via Octave) and try various things like:

set term 'windows'
plot x
set term 'qt'
plot x
set term 'x11'
plot x

I'm suggesting trying 'x11' even though it won't be present just to 
consider the case where Octave is mistakenly setting up the wrong 
terminal type.

Dan