Hello
I do not know why the number of visitors in my model does not increase properly?
What is the problem with my model?
please help me.
error in simulation data
error in simulation data
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- er.mdl
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Re: error in simulation data
Start by fixing the unit errors and removing the "*100" from your equations. Then see if the users increase in the way you expect them to.
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Units are important!
http://www.bbc.co.uk/news/magazine-27509559
Re: error in simulation data
Also, remove/replace the dynamic connection from "penetration rate" to "internet users" - stocks can only change via flows.
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Re: error in simulation data
thank you so much
Re: error in simulation data
I did all the hints but the problem has not been fixed yet!
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Re: error in simulation data
Can you upload the fixed model and explain why the numbers are wrong?
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
Re: error in simulation data
Thanks for your attention.
I fix dimension and remove penetration rate and 100 from equations, but the number of internet site visitors are still fixed in 2200000, and does not increase properly?
Is there a problem with the formula?
I fix dimension and remove penetration rate and 100 from equations, but the number of internet site visitors are still fixed in 2200000, and does not increase properly?
Is there a problem with the formula?
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- er-1.mdl
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Re: error in simulation data
You have ((Internet users-number of internet site visitor)/Internet users) for both the inflow and outflow of that stock, so the net change is 0.
Having no units is not really an improvement over having units errors.
I'd suggest working through some of the examples in the User Guide section of the Help system.
Having no units is not really an improvement over having units errors.
I'd suggest working through some of the examples in the User Guide section of the Help system.
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