Hello Dave, There two main ways do it, Instead of using the 'WIN' or 'X' buffer, you can use the 'Z' buffer or the PS to save as a postscript. Using Z buffer is really simple, see the example : myDevice = !D.NAME ; get device in use set_plot, 'Z' scrdim = [1400.,700.] loadct, 0, /SILENT !P.Background = 255 ERASE, 255 DEVICE, SET_PIXEL_DEPTH=24 DEVICE, SET_RESOLUTION=[scrdim[0],scrdim[1]] DEVICE, DECOMPOSED = 0 plot, indgen(5), indgen(5),$ xstyle = 1, ystyle = 1,$ color = 0, TICKLEN = -0.01 pngout = '~/filename.png' ; Output file WRITE_PNG, pngout, TVRD(TRUE = 1) DEVICE, /CLOSE set_plot, myDevice ; set the initial device Cheers, Vincent Sarago

Very thanks! Vincent Sarago. Is there any way to do this with the new graphics system?

Hello Dave, I think it's possible but you will have to use "Buffer = 1" to set an off-screen buffer. From Plot help : BUFFER (Init) Set this property to 1 to direct the graphics to an off-screen buffer instead of creating a window. Vincent