>Infact I'm using Xmaxima 5.9.3.
>Following Mario Rodriguez suggestions :
>plot2d(sin(x), [x, 0, 2*%pi], [gnuplot_preamble, "set terminal png;set out
>'myplot.png'"])$
>I obtained the png file, but the graph doesn't appear and Xmaxima chashes.
>Roman please, what do you mean saying " unlock the file with Unlocker "? Can
>you indicate me better what I have to do to show the graph?
I have been installed utility for deleting files - Unlocker.
http://ccollomb.free.fr/unlocker
After installing, just click with right button on file graph.png and select option "unlocker"=>"unlock all"
Then kill process wgnuplot.exe(Ctrl+Alt+Del) and restart maxima.
This solution is not elegant, but works :)