Re: Another FLTK/gnuplot divergence

[Ben Abbott]

On Sep 29, 2013, at 12:40 PM, Michael D. Godfrey wrote:

> On 09/27/2013 02:26 PM, Rafael Laboissiere wrote:
>> * Mike Miller <address@hidden> [2013-09-27 11:57]: 
>>> 
>>> Yes, the build *must* be able to complete and produce valid documentation 
>>> without any display, without even an X server running, to work in automated 
>>> or minimal build environments for example. 
>>> 
>>> Not to mention I don't want to see things flashing on my display :) 
>> 
>> On my Debian system with the xvfb package installed, I am able to run the 
>> following: 
>> 
>>   $ Xvfb :5 -screen 0 800x600x24 & 
>>   $ echo 'graphics_toolkit ("fltk"); plot (randn (10, 1)); print -dpdf 
>> test.pdf' | DISPLAY=:5 octave -q 
>> 
>> This will produce the file test.pdf without any window flashing on my 
>> screen, which is not the case with: 
>> 
>>   $ echo 'graphics_toolkit ("fltk"); plot (randn (10, 1)); print -dpdf 
>> test.pdf' | octave -q 
>> 
>> Rafael 
>> 
> 
> This is very good.  It works, with minor mods due to my use of tcsh as my 
> shell, on Fedora 19.
> 
> So, this means that a suitable function can be written to provide turning the 
> display of plots
> on or off.  Do systems other than Linux provide the equivalent of Xvfb?
> 
> One step closer to using fltk for the Manual.
> 
> Great.  Thanks.
> 
> Michael

MacOSX does

        $ which Xvfb
        /usr/X11/bin/Xvfb

However, on MacOSX we use an aqua implementation for FLTK, and as far as I know 
there is no equivalent to Xvfb.

Ben