Ventana software support forum

Thanks Tony, seems that I found the source of the error!

I have a subscribt problem in the following equation: ms car = SUM(tours ij opeak[i!,J!,car]+tours ij peak[i!,J!,car]) / SUM(tours ij opeak[i!,J!,mode!]+tours ij peak[i!,J!,mode!]) When I check the syntax the equation is ok, when I check the model it isn't. The error message is the following: -i-app...

Thank you very much!

Hi,

another question concerning optimization. I read in the vensim manual about the weights in the payoff definition.
And it's kind of hard to understand which scale they should take. Is there kind of a general rule, or something?

Thank you very much!

Hi, I would like to use the optimization tool to optimize two parameters in my model(attached), namely beta+AJ. The .dat format supports only binary data. In case the variable which has to be optimized is a matrix, how can I deal with this data. I have attached the model below. There are 3 zones. Mi...

Thank you Tony,

that sounds like a pretty difficult task, but gave me important hints for further research!

I posted the exel sheet, maybe I should express in a better manner what I want.
The general problem is that I want Vensim to take data for a period of time from exel. Before and after this time period I want the model to compute the inflow endogenous in the model.

Thanks for the reply!!

Hi, I want to built a model, that consists of only one stock with an inflow. Inflow should grow for 5 time steps with1/time step. From time step 5-10 the model should take the last stock value, import it into an Exel sheet, where some numeric operation happens (say every value times 3). At time step...