PySide, PySerial, Matplotlib

아따 어렵네...

import sys
from PySide.QtCore import *
from PySide.QtGui import *
import serial

import matplotlib
matplotlib.use('Qt4Agg')
matplotlib.rcParams['backend.qt4']='PySide'
import pylab

from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.figure import Figure

import threading, random

class TB_Form02(QDialog):
    def update_data(self):
        tmp = random.random()
        self.data1.append(tmp)
        tmp = random.random()
        self.data2.append(tmp)
        del self.data1[0]
        del self.data2[0]

        self.ax1.cla()
        self.ax1.plot(range(50),self.data1)
        self.ax2.cla()
        self.ax2.plot(range(50),self.data2)
        self.canvas.draw()

        t = threading.Timer(1.0, self.update_data)
        t.start()

    def __init__(self, parent = None):
        super(TB_Form02, self).__init__(parent)

        self.data1 = [0]*50
        self.data2 = [0]*50
        # generate the plot
        self.fig = Figure(figsize=(50,50), dpi=72, facecolor=(1,1,1), edgecolor=(0,0,0))
        self.ax1 = self.fig.add_subplot(211)
        self.ax2 = self.fig.add_subplot(212)
        self.ax1.plot(range(50),self.data1)
        self.ax2.plot(range(50),self.data2)
        
        # generate the canvas to display the plot
        self.canvas = FigureCanvas(self.fig)
        self.canvas.setFixedSize(250,200)
        self.update_data()

        FRAME = QHBoxLayout()
        FRAME.addWidget(self.canvas)
        self.setLayout(FRAME)


if __name__ == '__main__':
    app = QApplication(sys.argv)
    form = TB_Form02()
    form.show()

    sys.exit(app.exec_())