Re: getframe fails

[Pantxo]

JuanPi wrote
> Hi all,
> 
> The following code
> 
> n = 10000;
> for i=1:4
>     figure(i)
>     plot (randn(n,1), randn(n,1), '.')
> endfor
> 
> for i=1:4
>     figure(i)
>     set (gcf, 'units', 'normalized', 'position', [0 0 0.9 0.9]);
>     drawnow
>     imwrite (frame2im (getframe (gcf)), sprintf("/tmp/tstfig-%d.png", i));
> endfor
> 
> gives
> 
> warning: called from
>     getframe at line 102 column 11
> warning: opengl_renderer: Error 'invalid value' (1281) occurred
> drawing 'text' object
> 
> and the images are empty.
> 
> Any work around? Note that I need getframe because printing to file
> takes forever (opengl or gnuplot))
> 
> -- 
> JuanPi Carbajal
> https://goo.gl/ayiJzi
> 
> -----
> “An article about computational result is advertising, not
> scholarship. The actual scholarship is the full software environment,
> code and data, that produced  the  result.”
> - Buckheit and Donoho

Hi,

I tried to set figure "units" back to "pixels" and remove "drawnow" (which
is part of getframe anyway) and it worked, see bellow. Anyway I can
reproduce this bug. Could you file a bug report?
...
for i=1:4
    figure(i)
    set (gcf, 'units', 'normalized', 'position', [0 0 0.9 0.9], 'units',
'pixels');
    imwrite (frame2im (getframe (gcf)), sprintf("/tmp/tstfig-%d.png", i));
endfor


Pantxo



--
Sent from: http://octave.1599824.n4.nabble.com/Octave-General-f1599825.html