Ventana software support forum

Understood. Presumably there's a way to wrap C# for calling from C, but I don't know it. Writing small numerical modules in C is pretty straightforward - much easier than doing and performance will likely be better than with an extra layer and .net.

This is a Mac limitation. GET XLS uses GET DIRECT on the Mac, so the file has to be saved for changes to propagate. On Win GET XLS passes live values.

We've recently posted quite a few videos that introduce Ventity and work up to fairly complex models with dynamic creation of entities, cohorts and agents. See the links at http://ventity.biz/category/video/

If you don't include the :NOT: statement, the SAMPLE will update every time the condition is true, so you get the time of the most recent event, not the time of the first event. The logic is essentially the same as in the stock-flow version of the model that I posted. Incidentally, Vensim uses C-sty...

In the Control Panel custom Graph tab, Save As... to create a .vgd. Then you can edit via File>Edit..., or using an external editor like Notepad++.

The file format is here: https://www.vensim.com/documentation/23980.htm

Here's a feature comparison:
http://vensim.com/comparison/

Some kinds of simple games can be built even in PLE, using Synthesim in ordinary simulations. PLE+ has gaming mode (intermittent decisions throughout the simulation), but you need DSS for the Venapp application builder and .dll.

Normally, no - the headers rarely change. However, there have been a few changes, so if your library is old enough, it would need recompiling. You should get a warning about it at startup.

It looks like you're using an external function - check that you have the proper library specified in Tools>Options>Startup.

See the third example in the SAMPLE IF TRUE help:
https://www.vensim.com/documentation/in ... f_true.htm

The key is to make the condition for updating the sample contingent on:
(a) input>0
(b) sample not yet taken

We've just posted a series of videos that cover most of the material presented in our workshop at the System Dynamics conference:
http://vensim.com/ventity-introduction- ... on-models/

Sorry - misread - was thinking dll, not xfn.

What are you trying to do?

SAMPLE IF TRUE solves this problem for advanced versions - I can't remember if it's available in PLE+, but I don't think so.

However, you can use a stock to keep track of times. Something like:

Look in C:\Users\Public\Vensim\dll - there are csharp and vb.net examples.

There isn't a Vensim application for iPads. There is an iOS library, providing the same API as the Vensim .dll, that can be used to run Vensim models on an iOS device. It doesn't have an interface, so you'd need to develop your own graphical wrapper for it. Contact us at vensim@vensim.com for licens...

I think it works if you edit the .vgd manually, but I haven't tried it for a while. Do you need >6 for multiple variables, or just 1?

I think you're on the right track. A few suggestions: You really ought to use and check units. For example, currently Release Planning Work Generation=Release Size*Product Backlog Units: **undefined** Presumably backlog and release size have units of tasks, so this would have units of tasks*tasks, w...

It's fixed.

Right you are - we'll fix it asap.

This is only available in the multicontext .dll and Linux shared library, which are designed for high-throughput server applications like Forio. Contact us at vensim@vensim.com if you're interested in licensing.

We take down the old versions - you need to visit http://vensim.com/ventity.html again for a fresh copy.

I don't know of anyone who's tried, but if you have Vensim running OK in WINE, the .dll should work too, so it might be worth a try.

You can use a command script:
https://www.vensim.com/documentation/25710.htm

I think the control file (.voc) is missing?

Can you post a screenshot or Word sample of the problem? What happens if you paste to the end, then move the image within Word?