Sum over time

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Raphael
Newbie
Posts: 1
Joined: Wed May 02, 2018 1:55 pm
Vensim version: DSS

Sum over time

Post by Raphael »

Hi dear Vensim users,

I would like to calculate the sum over time. For example: I have a variable that states the amount of money spent on a project per time unit (year), sometimes more than initial, sometimes less (depending on the model). Now i would like to add each investments for each time to get the total amount spent on time x. Could anybody help me with a function for this? The function "Sum" is used with subscripts, but is that possible with "time"?

Thank you a lot.
Administrator
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Posts: 4573
Joined: Wed Mar 05, 2003 3:10 am

Re: Sum over time

Post by Administrator »

All you need to sum over time is a level. The flow in is the amount of money spent.
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