here is a example data = DIST(500) x = FINDGEN(500, start=1) win = window() win.refresh, /disable i = image(data, x, x, /current, /axis) win.save, 'test.png' "test.png" file No image appears.!! -> bug?? and question. data = DIST(500) x = FINDGEN(500, start=1)/5 c = contour(data, x, x, /ylog) i = image(data, x, x, /ylog, /axis) image function does not appear to ylog.(just yaxis value.....) but contour function is OK. Is that intended?? idl 8.4 and 8.3