text: import sys
  import matplotlib.pyplot as plt
  import numpy as np
  import time
  import pickle
  
  fig,ax=plt.subplots(num=0)
  plt.xlabel('Time [ms]')
  Y1=np.arange(-4.0e-3,0,0.1e-3)
  Y2=np.arange(0,4.01e-3,0.1e-3)
  Y=np.append(Y1,Y2)
  for YY in Y:
      ZZ=0
      fname='./APs,{:.2f},{:.2f},{:.0f},{:.6f}.p'.format(2000,5,10,YY*1000)
      with open(fname, 'rb') as fp:
          data = pickle.load(fp)
      APTs=[]
      MaxAPCount=0
      for key in data:
          if 'node' in key:
              temp=data[key].to_python()
              if len(temp)>MaxAPCount:
                  MaxAPCount=len(temp)
              APTs.append(temp)
  
      temp=APTs[0]
      plt.plot(temp,np.ones(len(temp))*YY*1000,'.',color='c',markersize=1.5)
      
      plt.ylabel('Axon distance from midline [mm]')
  Ymax=4.1
  Ymin=-4.1
  plt.ylim(Ymin,Ymax)
  ax.spines["top"].set_visible(False)
  ax.spines["right"].set_visible(False)
  plt.xticks([0,600,1200,1800])
  plt.yticks([-4,-3,-2,-1,0,1,2,3,4])
  plt.show()