Ventana software support forum

Setting the zoom to a fixed level should solve this.

Also, you may want to hide variables rather than deleting them. That way you can do everything in one model, and even one view.

I just made some changes to our mail configuration that *might* help with web.de in the future. Some hosts are just really aggressive at filtering and therefore create some false positives unfortunately.

Ticketed for improvement.

Not at present, but the Doc tool is slated for an update, so I'll add this to the list.

There are some unit errors here that could indicate the problem. The first is that "unitless" is not a known synonym for "dimensionless" (which Vensim understands). You can add an entry to Model>Settings>Units, like dmnl,dimensionless,unitless After that, there are still some iss...

In many cases, aggregation of diverse items makes the pipeline DELAY FIXED unrealistic, because items will vary in their lifetimes. In that case it may be better to use a lower order delay, like DELAY3, which also doesn't have the RHS constraint.

I doubt it's a key issue; that would give you an expiration dialog. However, if you email info@ventity.biz with the key, we can double check.

Actually, it's not quite the only option. An alternative is to use an array dimension as a virtual time axis, so that fast processes occur within the array (e.g. elements for each of 24h in a day) and the slow processes (daily or greater for example) run in normal dynamic time. As long as the fast d...

This model runs an action each time step that either updates an attribute to a new value, or retains the current value. Is this what you were after?

Checking with the devs ...

After you attempt the launch, if you open the Task Manager (<ctl><alt><del>), are there any zombie Ventity processes in the list?

We just posted 4.9.1, but I wouldn't expect it to differ in behavior (worth the upgrade though).

We've updated the 4.9 release with some bug fixes. See the notes at:
https://ventity.biz/ventity-4-9-release/

It's true that you can't currently aggregate an aggregate, because we don't have collections of collections. The workaround is to map the subcollection values back to a regular entity, and aggregate that. In this case, you could map the value by [quantile] counts back to the Quantile entitytype, com...

When you say "will not launch" - what's the symptom? Do you get a blue Windows Defender screen, or something else, or nothing?

Apart from the web help. you can also access the files directly in the c:\users\public\vensim directory.

Thanks for the feedback. I'm not really surprised at your choice, given the granularity of your model. It's not our target use case. Two quick tech notes: To make matter worse, Ventity only has If Then Else. It has no If Then. Thus, if you want to change the value of an attribute only if a condition...

I could not define it as a lookup data. the error was: GDPPRate is an special variable and can not be used as a normal variable. This sounds like an error in lookup usage. See the help system User Guide chapter, https://vensim.com/documentation/usr08.html , or the tutorial video https://vensim.com/...

Great!

I'm not sure if the change in notation is causing fewer warnings because of some property of surrogate vs. reference, or because the result is fewer undefined reference attributes around, but I'll look into it. I think the underlying problem is that the interface steers you to use of surrogates wher...

Another thing I notice is that there's an undeleted parent surrogate that's not on the diagram (probably inadvertent use of delete key).

Problem could be that you're using surrogates where you need references. Rule of thumb should be, if you're not changing an attribute, use a reference. Easiest way to change it is to edit the downstream equation, change the bullet to a dot, then use the right click method to add the referenced var, ...

or = ||

Generally boolean syntax is c-like: &&, II, !=, == but we permit a single = and <> too.

Is it a key? You can't change a key.

I think this may have been saved before the invoker attribute surrogate was defined, because for me there's nothing on the action view except a local attribute, "source type". What should the temp ID be set to?

Ah - you can use SAMPLE IF TRUE for that. If you don't have it (PLE), you can use a stock to freeze the value. Something like: value = ... { your stock } ~ stuff sampled value = INTEG( sample adj rate, value ) ~ stuff sample adj rate = IF THEN ELSE(time<=sample time,(value-sampled value)/TIME STEP,0...

Not sure I understand the question. If you don't know the stock values, how will you retrieve one?

If you have time series data, you can use GET DATA AT TIME or GET DATA BETWEEN TIMES. These functions tend to be slow, so often it's good to wrap them in an INITIAL().