Ventana software support forum

Try the attached.

All you can use is the latest version.

1. there is a problem with the function under "plant growth", I can´t solve. You used "[" and "]" for brackets, you cannot do that unless working with subscripts. Change the equation to growth rate*consumption level*Environmental pollution*(1-(consumption level*Environ...

It should be independent of the folder. But it's impossible to help further without a published model to look at. If you have hard coded the path to a spreadsheet in the model, then that would cause this problem.

There are two things I do not like to see when reading papers. 1. Models that have unit errors or missing units. I immediately assume the model is full of errors. If the model cannot past this basic check, then it suggests to me that the author has not taken the time to make sure things are correct ...

Same answer as before, it's impossible to say anything as you haven't uploaded the model. We cannot possibly know why the lines are not moving without seeing the model.

Nub_User wrote: ↑Wed Mar 13, 2024 3:04 pm I mean I can´t open two or more models in the same instance.

You can only do this in Vensim Pro/DSS.

We would need the model and VPD file to offer any help. There is clearly an error in that file.

1/Is it possible to obtain a "*_sens_trace" file with variables in columns? Not any more. You can easily do what you need in Excel though. 3/About the .cin file, I suppose it is an error log, but what type of errors are highlighted? I only see variables equal to a specific value, but I do...

SAMPLE IF TRUE will hold a value until something is "true". So create a variable that equals 1 every 365 days, and use that in the call to SAMPLE IF TRUE.

EWUK wrote: ↑Sat Mar 09, 2024 1:32 pm One adding question to the last:

Why do the 4 curves in the graph not react to the slider variation of "interest rate"?
Greetings
U. Küppers

It's impossible to say as you haven't uploaded the model.

Click the Options menu on the graph, then "Number lines".

I'll see if I can improve the error reporting. Maybe if I just change ERROR: Cannot find constant in model To one of the following depending on what is in the optimization control file. ERROR: Constant not found in model, cannot continue. or ERROR: Constant found in model, but no subscripts in optim...

The old GUI is no longer supported. The new GUI already does quite a lot more than the old (such as vector graphics).

You can also find a SVG of the image you want, save it to the model folder and use that as an image.

It comes from Tom's blog, but I think there was a slight modification before we put it directly into Vensim. https://metasd.com/2010/03/pink-noise/ :MACRO: RANDOM PINK NOISE(mean, std deviation, correlation time, seed) RANDOM PINK NOISE = INTEG(updating pink noise,mean+std deviation*RANDOM NORMAL(-6...

Do you have an example you can provide? I can probably make changes very quickly.

I'll raise this as a problem. You could try "Ratio of scrapped car = 0.5.vdfx". Traditionally in Vensim, you don't need to specify the filename extension when running a simulation. For example, you can enter "run 01" and Vensim will create "run 01.vdfx". Vensim searches...

You need a custom graph. Open the control panel (button near right of the top toolbar), one of the tabs allows you to create a custom graph with more than one variable.

Those are actually warnings that you have passed a variable to a lookup that has a unit.

Traditionally, lookups are supposed to have a dimensionless X axis.

The following help entry details what you can do.
https://www.vensim.com/documentation/22280.html

The graphic tools are "at a point in time", they will not update during SyntheSim.

But you can add a graph to the sketch, that will update during SyntheSim.

Can you upload the file? How large is it?

LAUJJL wrote: ↑Mon Mar 04, 2024 11:37 amIs there a plan in the future to make all the views displayed on the web server?

We do plan to add more functionality including multiple views, this is not going to be in the near future though.

EWUK wrote: ↑Mon Mar 04, 2024 10:52 amHow can I send an attachment with the Vensim file or an image and solve the problem why the curves in the graphics tool (from analysis tolls) do not change when changing the sliders?

When posting, click the attachments button and you can attach your model.

Ther are some limitations to publish a model on the web. It is sais in the documentation that: At present, only the active model view is published. What is the active model view? This is the sketch you are looking at when you click File->Publish to web. Does it mean that if you have ma model with m...