matlab graphics do not show a direct preservation

In the process of how to set up a direct save graphics without having to show? Thank you

before the plot could be set (0, 'DefaultFigureVisible ',' Off ')
changed because the default settings, after the display can be used to set (0,' DefaultFigureVisible ',' on ') and then to come back.Like this:

h_fig = figure ( 'Visible', 'off');
plot ();% of your statement drawing
saveas (h_fig,'1.Fig ');
close (h_figure);% to close figure, empty the memory