Introduction to the Modeling and Analysis of Complex Systems

178 CHAPTER 10. INTERACTIVE SIMULATION OF COMPLEX SYSTEMSRun this code, and you will find two windows popping up (Fig. 10.1; they may appearoverlapped or they may be hidden under other windows on your desktop) 12 .Figure 10.1: Graphical user interface (GUI) generated by pycxsimulator.py. Left: Visualizationwindow. Right: Control window.This interface is very minimalistic compared to other software tools, but you can still dobasic interactive operations. Under the “Run” tab of the control window (which shows upby default), there are three self-explanatory buttons to run/pause the simulation, updatethe system just for one step, and reset the system’s state. When you run the simulation,the system’s state will be updated dynamically and continuously in the other visualizationwindow. To close the simulator, close the control window.1 If you are using Anaconda Spyder, make sure you run the code in a plain Python console (not anIPython console). You can open a plain Python console from the “Consoles” menu.2 If you are using Enthought Canopy and can’t run the simulation, try the following:1. Go to “Edit” → “Preferences” → “Python” tab in Enthought Canopy.2. Uncheck the “Use PyLab” check box, and click “OK.”3. Choose “Run” → “Restart kernel.”4. Run your code. If it still doesn’t work, re-check the “Use PyLab” check box, and try again.