Re: [Matplotlib-users] Adapt animation_blit_qt4.py to a pure OO implementation (QT4 timerEvent)

Hi Darren,

On Thu, May 28, 2009 at 19:16, Darren Dale <dsd...@gm...> wrote:
> Try the attached script.

Oh it works very great! thanks you very much!

One thing I've done is also remove

import matplotlib
matplotlib.use('Qt4Agg')

since we're already importing the qt4agg backend directly right after.

One only thing it's left a bit obscure (also because doc is a little
missing) is this piece of code:

        # update the data
        self.line.set_ydata(np.sin(self.x+self.cnt/10.0))
        # just draw the animated artist
        self.ax.draw_artist(self.line)
        # just redraw the axes rectangle
        self.blit(self.ax.bbox)

first, I've not clear wat draw_artist and blit does, so if you can
shine some light on me :)

Secondly, the "effect" I'd like to achieve is to update the current
line values and "replace" the current line with a new one. In this
code, instead, the line is plotted keeping the previous instances
around. So the effect is to fil the canvas with sin function plots
instead of updating only one instance.

Do you know how to "fix" this?

Thanks a lot for your support! :)

-- 
Sandro Tosi (aka morph, morpheus, matrixhasu)
My website: http://matrixhasu.altervista.org/
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