Food Web Model Question

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AmyShurety
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Joined: Thu Nov 15, 2018 11:00 am
Vensim version: PLE

Food Web Model Question

Post by AmyShurety »

Hi there, I am constructing a food web model in Vensim PLE vs 7.2a and I am struggling to figure out what delay function to use. The delay would be an increase/decrease in a certain stock due to a seasonality change. So it would be a fixed amount at say every 4 months. Any advice and help would be greatly appreciated.
Administrator
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Re: Food Web Model Question

Post by Administrator »

Can you use a pulse train? It's difficult to say more without seeing the model you are working on.
Advice to posters seeking help (it really helps us to help you)
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tomfid
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Re: Food Web Model Question

Post by tomfid »

When I hear seasonality, I think of a SIN wave, rather than a delay. A PULSE TRAIN would be a good discrete substitute.
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