NetLogo Models Library:
This is a model of exponential growth using the System Dynamics Modeler.
At each step, the value of INFLOW is added to STOCK. The value of INFLOW is always the previous value of STOCK times a specified growth rate.
Press the SETUP button, then press the GO button to run the model.
View the STOCK monitor to see the current value of STOCK.
View the plot to observe the growth of STOCK over time.
Use the System Dynamics Modeler to add an outflow.
Try different growth-rate values.
Create a new stock that grows linearly. Try having the level of one stock influence the growth rate of the other.
This model uses the System Dynamics Modeler.
System Dynamics -> Logistic Growth
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For the model itself:
Please cite the NetLogo software as:
Copyright 2005 Uri Wilensky.
This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License. To view a copy of this license, visit https://creativecommons.org/licenses/by-nc-sa/3.0/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Commercial licenses are also available. To inquire about commercial licenses, please contact Uri Wilensky at firstname.lastname@example.org.