Ventana software support forum

Thanks. That is the syntax I am looking for. I am still figuring out ways to avoid it.

Just wondering, how do we formulate a double IF THEN ELSE condition? For example, Before time x, the value is x, After time x, the value is STEP(y,<Time X>), Then after time z, the value is change to STEP(z, <time z>) is it possible to write equation like other programming language IF <Condition> Th...

Thank You, I will look at it once more.

Just wondered how do we use the Random Lookup function for vensim? I got a problem here which is my lookup value is always constant from the lookup graph for all the days. Is it because I define my X as constant? For example, I define Lookup(x) when X is a const value and lookup is the predefined gr...

Thanks~! I will go try it and see what goes wrong with my model....

I mean my main Model Setting is graphed in "Days" ranging from 0 to 2190 days. i have created the following variable days per year=365 Units:day Initial Time=0 Units:day Final Time=2190 Units:day Year=TIME BASE(2002,0.00273973) Units:year The year variable is alone in the model without lin...

Is it possible to have the following as a variable standalone on the diagram and the graph will display X-Axis as Year(year)? Year=TIME BASE(2002,0.00273973) I used the "Control Panel" option to display the graph with x-axis = Year but it still give me the values in Days but the label is w...