Search found 4583 matches

by Administrator
Fri Jan 26, 2024 4:44 pm
Forum: System Dynamics Discussion
Topic: Utilizing Ventana Systems Tools for enhancing data breach protection strategies ?
Replies: 3
Views: 982

Re: Utilizing Ventana Systems Tools for enhancing data breach protection strategies ?

I've got no doubt that you can use both Vensim and Ventity to help. What you are describing sounds like a major project, it's not something that any of us could give you a few pointers to get you going.
by Administrator
Thu Jan 25, 2024 4:21 pm
Forum: Vensim
Topic: Max file size
Replies: 5
Views: 1073

Re: Max file size

Do you really need to export the whole file? You can use a savelist to export just the data you need.
by Administrator
Thu Jan 25, 2024 8:12 am
Forum: Vensim
Topic: Max file size
Replies: 5
Views: 1073

Re: Max file size

In theory there is no maximum file size. It's going to take a lot of time though to export something that size.
by Administrator
Mon Jan 22, 2024 11:39 am
Forum: Vensim
Topic: Cannot run Vensim after install
Replies: 4
Views: 875

Re: Cannot run Vensim after install

From the wiki page,
Mainstream support for the Embedded Standard edition of Windows 8 ended on July 10, 2018, and extended support ended on July 11, 2023. As of August 2023, 0.35% of PCs are running Windows 8.
You should definitely move to Windows 10.
by Administrator
Mon Jan 22, 2024 11:13 am
Forum: Vensim
Topic: Custom graphs in the new GUI.
Replies: 1
Views: 710

Re: Custom graphs in the new GUI.

It's on the control panel (same as old GUI), to the right on the top toolbar.
by Administrator
Mon Jan 22, 2024 11:01 am
Forum: Vensim
Topic: Cannot run Vensim after install
Replies: 4
Views: 875

Re: Cannot run Vensim after install

I don't think Windows 8 is supported any more so it's unlikely Vensim will run on it.

You can try an older version, or even better, update to a supported operating system.
by Administrator
Thu Jan 18, 2024 6:35 pm
Forum: Vensim
Topic: Export as SVG not workingn correctly for new sketch style
Replies: 3
Views: 947

Re: Export as SVG not workingn correctly for new sketch style

I think that's more or less the best we can do with the newer sketch style.

I'll see if we can adjust things to line up the pipes. But the curves and drop shadows don't seem to be drawn at all.
by Administrator
Tue Jan 16, 2024 3:19 pm
Forum: Vensim
Topic: Command Script on macOS
Replies: 1
Views: 1064

Re: Command Script on macOS

There is no equivalent. Are you having trouble with it?
by Administrator
Tue Jan 16, 2024 8:12 am
Forum: Vensim
Topic: Unable to converge simultaneous loop
Replies: 5
Views: 2146

Re: Unable to converge simultaneous loop

You've got some very basic errors in model formulation which is why I suggested going through the tutorial. "Total surface water" should be a stock/level which increases via "Natural rainfall" and decreases via "evaporation". "Evaporation rate" is 36.9 (but th...
by Administrator
Mon Jan 15, 2024 1:21 pm
Forum: Vensim
Topic: about a simple use of the new GUI
Replies: 2
Views: 2014

Re: about a simple use of the new GUI

Try the attached, press the SyntheSim button to start the sim.
by Administrator
Mon Jan 15, 2024 1:09 pm
Forum: Vensim
Topic: Unable to converge simultaneous loop
Replies: 5
Views: 2146

Re: Unable to converge simultaneous loop

Have you been through any of the Vensim tutorials? I would start with the PLE tutorial at the following page,
http://www.public.asu.edu/~kirkwood/sysdyn/SDRes.htm

This will get you to the point where you can build a basic model. Once you've done this, I'd start again.
by Administrator
Sat Jan 13, 2024 12:26 pm
Forum: Vensim
Topic: How to publish a model using DLLs?
Replies: 3
Views: 2226

Re: How to publish a model using DLLs?

Sorry, I misunderstood your first mesage.

No, you cannot do this via the DLL. The DLL will only open published models, so there is no way to get the MDL file into the DLL in order to publish it. You need to run these commands in Vensim via a command script.
by Administrator
Sat Jan 13, 2024 9:36 am
Forum: Vensim
Topic: Unable to converge simultaneous loop
Replies: 5
Views: 2146

Re: Unable to converge simultaneous loop

You'll need to upload your model for us to be able to help.

It's rare that you even need to use this function, my guess is you have some sort of formulation problem.
by Administrator
Fri Jan 12, 2024 9:28 am
Forum: Vensim
Topic: Vensim macOS New Model/Window [Bug?]
Replies: 3
Views: 7350

Re: Vensim macOS New Model/Window [Bug?]

Yes, we are aware. There are much bigger problems with the Mac at the moment due to the latest Xcode/SDK.
by Administrator
Fri Jan 12, 2024 9:27 am
Forum: Vensim
Topic: How to publish a model using DLLs?
Replies: 3
Views: 2226

Re: How to publish a model using DLLs?

You'll need to set up a form for publishing, and then us that when calling
FILE>PUBLISH|frmfile

https://www.vensim.com/documentation/25033.html
by Administrator
Wed Jan 10, 2024 5:12 pm
Forum: Vensim
Topic: Get data xls with multiple subscripts
Replies: 4
Views: 4689

Re: Get data xls with multiple subscripts

Can you get the sample models working? They should import more than 1 subscript.
by Administrator
Tue Jan 09, 2024 10:34 am
Forum: Vensim
Topic: Can't view model as sketch
Replies: 12
Views: 13177

Re: Can't view model as sketch

Try changing this to the following and see if it now opens.

Code: Select all

initial pmr[Country]=0
~
~ |
by Administrator
Tue Jan 09, 2024 10:16 am
Forum: Vensim
Topic: Forced quit report
Replies: 1
Views: 3751

Re: Forced quit report

Can you please contact us via email at vensim@vensim.com.

We receive the reports from you, but you never include any contact details so we can follow up.
by Administrator
Sun Jan 07, 2024 9:44 am
Forum: Vensim
Topic: Multi-input Lookup
Replies: 13
Views: 26902

Re: Multi-input Lookup

Sorry again, I'm still under the weather. I've attached a demo model that does this two different ways. 1. Reading the values in as data. This is my preferred way of doing things, read these in as a time series and use GET_DATA_AT_TIME ("time" being the outside diameter). But that might me...
by Administrator
Sat Jan 06, 2024 2:43 pm
Forum: Vensim
Topic: Vensim not correctly calculating stock from flows
Replies: 4
Views: 7921

Re: Vensim not correctly calculating stock from flows

Can you provide more detail please? Looking at the spreadsheet, there are two columns titled "calculated stock value", but it's not clear to me what stock this is referring to (there are numerous stocks in the model). Also, are you including time step in your Excel calcs? https://www.vensi...
by Administrator
Sat Jan 06, 2024 8:53 am
Forum: Vensim
Topic: Close Excel when exiting Vensim (if opened) won't stay active
Replies: 1
Views: 4790

Re: Close Excel when exiting Vensim (if opened) won't stay active

Thank you.

This setting is also under the "Excel" settings window, so I'll remove it from the "General" section in the next Vensim release.
by Administrator
Fri Jan 05, 2024 1:33 pm
Forum: Vensim
Topic: Unable to open Vensim
Replies: 7
Views: 9387

Re: Unable to open Vensim

If you've used Vensim before, try deleting or renaming the .venple file in your home folder (it's hidden).

This will mean Vensim starts with default settings, maybe you had the old GUI running before?
by Administrator
Fri Jan 05, 2024 1:31 pm
Forum: Vensim
Topic: Multi-input Lookup
Replies: 13
Views: 26902

Re: Multi-input Lookup

Sorry for the slow reply (I'm unwell at the moment). I still just don't understand this at all. Can you try and simplify things please? Let me know what info you have, then what you need to get from it? If you have an array of lookups, it's easy to pick out a specific one which could be the 2nd look...
by Administrator
Wed Jan 03, 2024 12:34 pm
Forum: Vensim
Topic: Bug
Replies: 4
Views: 7987

Re: Bug

PS. Vensim has a dark mode sketch if you want to use it (View->Dark mode sketch).