getframe fails

[JuanPi]

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

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