On Sat, Apr 19, 2008 at 11:23 PM, hjc520070 <[EMAIL PROTECTED]> wrote: > > I work matplotlib on wxpython, python2.5. > It is wonderful that the following code work faster than canvas.draw(). > canvas.restore_region(background) > ##Updata three lines and draw it. > line.set_data(x,y) > ax.draw_artist(line) > canvas.blit(ax.bbox) > canvas.gui_repaint() > When I creat a frame and set frame.Show(True). Then ,refresh the line on > canvas with above method. It works. > However,When I creat a frame and set frame.Show(False). Then ,refresh the > line on canvas with above method. It fails. And get the following message. > ''' > File "C:\Python25\Lib\site-packages\matplotlib\axes.py", line 1299, in > draw_artist > assert self._cachedRenderer is not None > AssertionError > ''' > I creat a lot of frames and do not want to show it at frist. However, when > with frame.Show(False), I can refresh the canvas. Is there any solution? > Could anyone help me? Your help will be appreciated a lot. Thanks.
You cannot call "draw_artist" until after the initial draw. So you will either need to explicitly call fig.canvas.draw() first or put your draw_artist command in a GUI handler that is not called until after the initial draw event. JDH ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Matplotlib-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/matplotlib-users
