On Thu, Mar 6, 2008 at 3:00 AM, <[EMAIL PROTECTED]> wrote: > "Anthony Floyd" <[EMAIL PROTECTED]> writes: > > > I would like to 'watermark' a plot. That is, display an image 'under' > > several lines. [...] I've tried using figure.figimage, but that only > > > draws the watermark 'outside' the plot area. Fair enough. > > The background of the axes object is called a "frame", and you want to > not draw it at all (pass frameon=False to add_axes) or make it > translucent: > > fig=figure(...) > fig.figimage(...) > ax=fig.add_subplot(...) > ax.get_frame().set_alpha(0.5)
For the archives, I found that the best way to do this was to set the frame alphas to 0.0, and to draw the watermark directly in the canvas' .draw() routine. This allows for smooth panning and resizing. Otherwise, when trying to redraw the watermark in response to an EVT_SIZE (I'm using wx), two problems would come up. 1) The redraw routine would happen before the frame/panel/canvas/figure 'knew' what its new size was, causing some weird 'jumping around' artefacts, and 2) There'd be some serious flicker because the plot would be drawn then the watermark would be drawn. A> ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
