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NetLogo Models Library:
Sample Models/System Dynamics

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Logistic Growth

[screen shot]

If you download the NetLogo application, this model is included. (You can also run this model in your browser, but we don't recommend it; details here.)

WHAT IS IT?

This is a model of a logistic growth curve using the System Dynamics Modeler.

HOW IT WORKS

At each step the difference equations n * (1 - n) is calculated and added to the stock.

HOW TO USE IT

Press the SETUP button, then press the GO button to run the model.

THINGS TO NOTICE

View the STOCK monitor to see the current value of STOCK.

View the plot to observe the growth of STOCK over time.

THINGS TO TRY

What do you think might happen if the initial value of stock is larger than 1? less than zero?

NETLOGO FEATURES

This model uses the System Dynamics Modeler.

RELATED MODELS

System Dynamics -> Exponential Growth

HOW TO CITE

If you mention this model or the NetLogo software in a publication, we ask that you include the citations below.

For the model itself:

Please cite the NetLogo software as:

COPYRIGHT AND LICENSE

Copyright 2005 Uri Wilensky.

CC BY-NC-SA 3.0

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 uri@northwestern.edu.

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