title: VISSIM com interface plotting simulation value in real time and converting it in a data frame appending the value
body: <p>I am using PTV VISSIM COM to measure different attributes like speed, vehicle count, etc. Part of my code is as below</p>
  <pre><code>End_of_simulation = 60 # simulation second [s]
  resolution = 10 # Number of steps in a second
  Vissim.Simulation.SetAttValue('SimPeriod', End_of_simulation)
  Vissim.Simulation.SetAttValue('SimRes', resolution )
  for j in range (End_of_simulation * resolution):
      Vissim.Simulation.RunSingleStep()
      volume=DC_measurement.AttValue('Vehs(Current,Current,All)')
      print(volume)
  </code></pre>
  <p>The output of this result runs the simulation in real-time and the volume keeps coming in print until the simulation ends. like</p>
  <pre><code>0
  0
  1
  1
  ...
  continues until simulation end
  </code></pre>
  <p>I was trying to see</p>
  <ol>
  <li>if it is possible to plot these values in real-time /at the same time the simulation is going on.</li>
  <li>Also keeping them appended into a <code>data frame</code> with a column name such that as the simulation continues values will be kept included in the data frame and it's length will continue changing. How could I possibly achieve that?</li>
  </ol>