Question

我试图将名为＆＃39; perpetualTimer＆＃39;的定时器中断类导入文件ChangingPlot，并且我遇到了麻烦。本质上，此代码允许用户使用滑块在屏幕上移动蓝色标记并尝试跟随图形（在这种情况下，我使用对数图）。标记的y坐标由GUI slider widget控制，我希望x坐标由我在时间类中定义的连续时间步长控制。 ChangingPlot中的更新功能更新了这两个值，这是我不断导入和更新时间的麻烦。有人可以帮忙吗？

代码：

import matplotlib.pyplot as plt
import numpy as np
from timer import time
from matplotlib.widgets import Slider

from timer import time
from threading import Timer,Thread,Event

class perpetualTimer():

   def __init__(self,t,hFunction):
      self.t=t
      self.hFunction = hFunction
      self.thread = Timer(self.t,self.handle_function)

   def handle_function(self):
      self.hFunction()
      self.thread = Timer(self.t,self.handle_function)
      self.thread.start()

   def start(self):
      self.thread.start()

   def cancel(self):
      self.thread.cancel()

def timerloop():
   vec = np.arange(0,5,0.01) #time with time step
   for val in np.nditer(vec): 

      if val != 5:
         #print val
         return val

t = perpetualTimer(1,timerloop)
t.start()


class ChangingPlot(object):
    def __init__(self):
        #timestep value
        self.inc = 0.01

        self.fig, self.ax = plt.subplots()

         #[0.2, 0.02, 0.6, 0.03] define the position of the slider
        self.sliderax = self.fig.add_axes([0.2, 0.02, 0.6, 0.03], axisbg='yellow')

        #self.slider = Slider(self.sliderax, 'Value', 0, 10, valinit=self.inc)

        #max to initial value on the slide defined here and increment step is given by self.inc
        self.slider = Slider(self.sliderax, 'Value', 0, 10, valinit=self.inc)
        self.slider.on_changed(self.update)
        x = np.arange(0, 10.5,0.1) #gives the exact increments for the plot dots 
        #can define shape of base graph here
        self.ax.plot(x, 1/x, 'ro') #log graph coordinates
        self.dot, = self.ax.plot(2, 10, 'bo', markersize=18)


    def update(self, value):

        #link to value from slider 
        valuey = int(value / self.inc) * self.inc
        valuex = perpetualTimer(1,timerloop)

        self.dot.set_data([valuex],[valuey])
        self.slider.valtext.set_text('{}'.format(value))
        self.fig.canvas.draw()

    def show(self):
        plt.show()

p = ChangingPlot()
p.show()

在Python中作为全局时间连续更新定时器中断

0 个答案: