Works for me: fedora 21 OSMesa-10.4.3-1

Thanks!!

Confirmed that GNOME 3 does not unmap windows that are minimized or moved to another workspace. So the effect of minimizing or moving a window to an alternate virtual desktop does depend on which window manager or desktop environment you are using.

I believe that the fact that this bug is difficult to solve is not a valid reason to demote this report as a "feature request". As noted in some other comments, submitting Octave jobs to remote batch scheduler is a perfectly valid use case, and is quite common in some scientific communities where long-running computations are normal. I myself make heavy use of the possibility to print plots that are made invisible with the

figure(1,"visible","off");

command, so that I can automate the compilation of LaTeX documents with embedded graphics using a makefile, pretty much as the Octave documentation is produced.

So far I'm perfectly fine with forcing the gnuplot backend. However, if fltk is ever going to replace gnuplot, this bug should be addressed.

I suggest to change the item group to "incorrect result"; this is really a bug, not a new feature.

Moreno Marzolla.

As long as Octave uses gl2ps, the figure must be displayed in order to capture the OpenGL content and render an image.

I'm changing the status to Postponed.

I agree that off screen plotting may not be that useful(I didn't think about the X server requirement) and that off-screen openGL is tricky.

Concerning that last bit, off-screen openGL could be replaced by a proper 3D file output (from the OpenGL objects). An external renderer, such as Blender, Yafray (...) could be then used to render the graphics.

Concerning the bug report, I think that even if the print command doesn't print it should not mess up the object so that the next 'visible'  = 'on' command fails.
(it is not the print that fails but the set cmd, calling to display again). At best print when "visible"="off" should do nothing harmful.

So I would consider it a (very minor) "bug report", coupled with a large "feature request" :-)

The print command using fltk toolkits doesn't work on 'visible'='off' figure while it works using the gnuplot toolkit

graphics_toolkit fltk;

x = rand(3);
plot (x)
print (gcf,"test_visible.png","-dpng")
set (gcf,'visible','off')

print (gcf,"test_invisible.png","-dpng")
set (gcf,'visible','on')

leads to

error: gl2ps-renderer: fdopen failed

after the  " set (gcf,'visible','on') " command.

The print command on the "invisible" figure does not produce any file (not even a white .png).

the same code without -dpng produce a "test_invisible.ps" but it is a white page.


- Remark :
It may seem strange to want to print figure without seeing them but it is quite handy in a loop where you want to produce images for example.
-

Could someone confirm this ?

Regards,
 Fab.