matplotlib real time grap.

[luca72]

Hello at all.
I need to do a real time plot where on the frame i have this like limit
line:
        import math
        dati = []
        for freq in range(int(freqiniziale), (int(freqfinale )+ 1)):
            forza = float(massa) * ((2*math.pi*freq)**2)/10
            dati.append(forza)
        ax1 = subplot(111)
        plot(dati)
        xlabel('Frequenza HZ')
        ylabel('Deg')
        title('Grafico Calibrazione')
        ax2 = twinx()
        plot([0.1,0.2,0.3],'r-')
        ylabel('Forza')
        ax2.yaxis.tick_right()
        #dlg = wx.FileDialog(self, "Choose a file", ".", "", "*.*",
wx.SAVE)
        #try:
          #  if dlg.ShowModal() == wx.ID_OK:
            #    filename = dlg.GetPath()

              #  savefig(filename+'.pdf')
        #finally:
          #  dlg.Destroy()
        show()

with this i have the grap on the screen but i have to update every time
that i receive others data coming from two instruments (10 seconds),
how i can update the grap?

Regards

Luca