Ventana software support forum

OK I got it. Thank you so much!

Ray

Hi, I try to use the custom graph tool to make figures from the simulation outputs of VENSIM. Please see the file attached. I have two questions as follows: 1. The legend in the bottom occupies too much space. How to make one-column legend into two columns? 2. The variable name "adopted consume...

Yes, the SAMPLE IF TRUE function has solved my problem. Thanks a lot.

Ray

Hi, I'd like to implement a function that updates a variable until the condition is met. It looks simple using any programming language, but I tried to solve this problem for one day. I define a variable in VENSIM and use IF-THEN-ELSE as follow: IF THEN ELSE(random number > threshold value, RANDOM U...

I will try it. But the problem now becomes how to perform "Set the value to 0 for projects that are inactive" in each simulated year automatically, according to the number of projects assigned each year based on yearly operating profit obtained, rather than manually? I need to figure it o...

"Create an array dimension for the projects, and use SUM(value[project!]) to add them up. " "Set the value to 0 for projects that are inactive." I will try it. But the problem now becomes how to perform "Set the value to 0 for projects that are inactive" in each simulat...

"Can you post the model you have? " The model is still in the conceptual stage, so it is quite messy and not suitable to share here. "If you are summing over a subscript range, you can use the SUM function." The problem is that in my case the subscript range (i.e., the number of...

Hi, I am trying to use Vensim to develop a system dynamics model for R&D portfolio management recently. I need to evaluate the financial performance of each project at the end of each year (every project has a different financial value and cannot be known in advance) in a portfolio and I have a ...