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.
Sum over time
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Re: Sum over time
All you need to sum over time is a level. The flow in is the amount of money spent.
Advice to posters seeking help (it really helps us to help you)
http://www.ventanasystems.co.uk/forum/v ... f=2&t=4391
Units are important!
http://www.bbc.co.uk/news/magazine-27509559
http://www.ventanasystems.co.uk/forum/v ... f=2&t=4391
Units are important!
http://www.bbc.co.uk/news/magazine-27509559