Re: Silent plot(x,y) (3.2 or later bug?)

[Carlo de Falco]

On 16 Oct 2009, at 02:59, Karol Krizka wrote:

> 2009/10/15 Tatsuro MATSUOKA <address@hidden>:
> > Hello
> >
> > Please try
> >
> > x=[0:1];
> > for i=[0:100]
> > plot(x,x*i);
> > filename=sprintf("%02d.png",i);
> > drawnow('png',filename);
> > end
> >
> > The above works on octave 3.0.5 (mingw).
> Thanks, that works!
>
> > However, it does not work on octave 3.2.2 (mingw), 3.3.50+ (mingw)  
> > and octave 3.2.3(cygwin)
> > error: get: unknown property "__pixels_per_inch__"
> > error: called from:
> > error:   C:\Programs\Octave\3.2.2_gcc-4.3.0\share\octave\3.2.2\m 
> > \plot\gnuplot_drawnow.m at line 190,
> > column 14
> > error:   C:\Programs\Octave\3.2.2_gcc-4.3.0\share\octave\3.2.2\m 
> > \plot\gnuplot_drawnow.m at line 74,
> > column 7
> >
> > The error message is for octave 3.2.2 (mingw) but that for octave  
> > 3.2.3 on cygwin is almost the same.
> I also have octave 3.2 installed on a different Ubuntu computer, and I
> get the same error.
> error: get: unknown property "__pixels_per_inch__"
> error: called from:
> error:   /usr/share/octave/3.2.2/m/plot/gnuplot_drawnow.m at line  
> 190, column 14
> error:   /usr/share/octave/3.2.2/m/plot/gnuplot_drawnow.m at line  
> 74, column 7
> error:   test.m at line 5, column 2

the following should work on 3.2.x (I have tested it on 3.2.3 on OS X)

close all
set (0, "defaultfigurevisible", "off")
for i=[0:100]
plot(x,x*i, "visible", "off");
filename=sprintf("%02d.png",i);
print('-dpng',filename);
end
set (0, "defaultfigurevisible", "on")

hth
c.
> --
> Cheers,
> Karol Krizka
> http://www.krizka.net