Vensim time step

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Eddie
Junior Member
Posts: 2
Joined: Fri Mar 17, 2006 9:42 am

Vensim time step

Post by Eddie »

Good morning

I am currently working in a R&D service and using Vensim for modelling and simulation.

The model considers some variables with year integration, others with day integration so:

Does someone know if it is possible to use, for instance, 2 different time steps for 2 different parts of my model? I mean one time step / view.

Tell me if I have to be more accurate for a more consistent reply.

Thank you in advance for your reply.

Enjoy your day

Eddie

[Edited on 3-17-2006 by Eddie]
bob@vensim.com
Senior Member
Posts: 1107
Joined: Wed Mar 12, 2003 2:46 pm

Post by bob@vensim.com »

Currently you need to use a single time step - normally the smallest of the two. The units for time constants and rates also need to be the same - though you can use something like:

Cum Revenue = INTEG(revenue/Days Per Year,0) $
revenue = ... $/Year
Days Per Year = 365 day/year

to simplify things.
Eddie
Junior Member
Posts: 2
Joined: Fri Mar 17, 2006 9:42 am

Post by Eddie »

thanks, I am going that way and see the results.
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