天道酬勤

下面的例子显示了python动态图的做法，可以适用于其他图标，例如柱状图等。

#encoding=utf8
import matplotlib
import wx
import numpy as np
matplotlib.use('WXAgg')
from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg as FigureCanvas
from matplotlib.figure import Figure
import threading
import time


class CpuInfoWindow(wx.Frame):
    def __init__(self):
        super(CpuInfoWindow,self).__init__(None,title='test',size=(600,600))
        self.j = 0
        
        #panel
        self.panel = wx.Panel(self)
        self.figure = Figure()
        self.axes = self.figure.add_subplot(111)
        self.canvas = FigureCanvas(self,-1,self.figure)
        self.axes.set_xlim(0,10)
        self.axes.set_ylim(-2,2)

        #ready all things
        #self.bg = self.canvas.copy_from_bbox(self.axes.bbox)
        self.x = np.arange(0,3.0,0.01)
        self.y = np.sin(2*np.pi*self.x)
        self.fg, = self.axes.plot(self.x,self.y)
        print(dir(self.axes))

        #button
        timer = threading.Timer(1,self.draw)
        timer.start()
        
        
    def draw(self):
        #panel
        self.j=self.j+1
        #self.canvas.restore_region(self.bg)
        self.axes.set_xlim(0+0.1*self.j,10+0.1*self.j)
        self.axes.set_ylim(-2,2)
        self.x = np.arange(0+0.1*self.j,3.0+0.1*self.j,0.01)
        self.y = np.sin(2*np.pi*self.x)
        self.fg.set_xdata(self.x)
        self.fg.set_ydata(self.y)
        self.canvas.draw()
        timer = threading.Timer(0.05,self.draw)
        timer.start()

if __name__=="__main__":
    win = wx.App()
    cpu = CpuInfoWindow()
    cpu.Show()
    win.MainLoop()

后记：Mac 安装matplotlib和wxpython后，出现一个小问题，Google之后解决

ImportError: No module named wxversion

解决方法：On OS X do not ever install python modules as root

python -m pip install --user --upgrade matplotlib

然后用IDLE启动python脚本