Dear users,
I have been working on a scope based on matplotlib to monitor acquisition
data. In order to enhance frame per seconds, I have used matplotlib's blit
capabilities and works ok. No flickering, nice and smooth. Here's how it's
done, take note that bbox is taken from the figure and not the axes object
in order to make the scale animated. The problem I have, is that the figure
is all white because of this.. just a question of esthetics :-) If bbox is
taken from the axis, the scale will never be drawn. Any suggestion?
# Set all the animated object to animated
self.ax.get_xaxis().set_animated(True)
line = Line2D(tdata,ydata,animated=True)
# Then a copy of the display
background = self.canvas.copy_from_bbox(self.fig.bbox)
# then loop over the acquisition and update
self.ax.set_xlim(tdata[-1] - self.maxt,tdata[-1]) # update axis
self.line.set_data(tdata,ydata) # update line data
self.canvas.restore_region(background) # restore background
self.ax.draw_artist(self.line[0]) # redraw line
self.ax.draw_artist(self.ax.get_xaxis()) # redraw axis
self.canvas.blit(self.fig.bbox) # blit
http://old.nabble.com/file/p26635860/acquisition.png
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