It will need to be a manual process, there is no way to invert the polarities.
But it is relatively quick. Make sure the sketch is unlocked, select the arrows, then press either + or -. The polarity will be applied to all selected arrows.
Search found 4678 matches
- Tue Nov 05, 2024 11:52 am
- Forum: Vensim
- Topic: Simple way to invert polarity of all links to and from a variable?
- Replies: 1
- Views: 47
- Mon Nov 04, 2024 9:32 am
- Forum: Vensim
- Topic: units for %
- Replies: 10
- Views: 182
Re: units for %
Use DMNL (dimensionless).
- Sat Nov 02, 2024 9:10 pm
- Forum: Vensim
- Topic: Reiterating Data
- Replies: 14
- Views: 284
Re: Reiterating Data
Get data at time could possibly be used. You can use the modulo function to work out the time at which to get the data.
- Mon Oct 28, 2024 1:01 pm
- Forum: Vensim
- Topic: BUG: Zoom text field not accept numbers when blank
- Replies: 1
- Views: 115
Re: BUG: Zoom text field not accept numbers when blank
That is hard coded so it will only accept something between 6 and 500. So if you type "1" (in order to enter 100), it fails as "1" is invalid.
I'll change the code so it checks when you click OK instead.
I'll change the code so it checks when you click OK instead.
- Mon Oct 28, 2024 8:44 am
- Forum: System Dynamics Discussion
- Topic: Apply measures to Lookup
- Replies: 3
- Views: 389
Re: Apply measures to Lookup
You can use something like
value at 2025 = initial ( Lookup table(2025) )
value at 2025 = initial ( Lookup table(2025) )
- Mon Oct 28, 2024 8:43 am
- Forum: Vensim
- Topic: Function Examples
- Replies: 1
- Views: 183
Re: Function Examples
The intention is that you find the sample models via their help page. For example, the following page has the link to the sample model. https://www.vensim.com/documentation/fn_allocate_by_priority.html I've created a temporary html file in the function examples folder that lists them all. I'll need ...
- Fri Oct 25, 2024 12:38 pm
- Forum: System Dynamics Discussion
- Topic: Apply measures to Lookup
- Replies: 3
- Views: 389
Re: Apply measures to Lookup
This is just a guess as you haven't provided much to go on. CONSTANT POPULATION GROWTH RATE = 30? CONSTANT POPULATION GROWTH RATE START TIME = 2040 {year} CONSTANT POPULATION GROWTH RATE END TIME = 2070 {year} IF THEN ELSE ( time > CONSTANT POPULATION GROWTH RATE START TIME :and: time < CONSTANT POP...
- Fri Oct 25, 2024 10:50 am
- Forum: Vensim
- Topic: Symbols for avalanche & scale (Loop identifier pictures) please as vector graphic
- Replies: 1
- Views: 222
Re: Symbols for avalanche & scale (Loop identifier pictures) please as vector graphic
Can you share an example?
The internal clipart is all SVG now, but they do render to a bitmap for drawing. I can look at embedding SVG images instead, not sure how that might work though.
The internal clipart is all SVG now, but they do render to a bitmap for drawing. I can look at embedding SVG images instead, not sure how that might work though.
- Thu Oct 24, 2024 6:17 pm
- Forum: Vensim
- Topic: Error OE2132B?
- Replies: 1
- Views: 212
Re: Error OE2132B?
I don't ever recall seeing that. It's an internal Vensim error related to the error log.
Are you using the new or old GUI?
Are you using the new or old GUI?
- Thu Oct 24, 2024 7:23 am
- Forum: Vensim
- Topic: SDEverywhere vs. reality checks
- Replies: 5
- Views: 494
Re: SDEverywhere vs. reality checks
I cannot comment on SDEverywhere (I totally failed to make it work the one time I tried, but that was quite a while back). I believe the SDEverywhere checks are more geared towards checking that it is working correctly rather than checking a model is doing what it should. A really useful check I alw...
- Mon Oct 21, 2024 12:43 pm
- Forum: Vensim
- Topic: Improving equation
- Replies: 2
- Views: 367
Re: Improving equation
I'd make a couple of small changes first. Putting numbers into equations is generally considered bad practice as anyone looking at the model will have no idea what they are. MAX MOTORIZATION RATE = 850 (Units:car/kperson) GROWTH RATE WHEN MAX MOTORIZATION ACTIVE = 0.01 (Units:DMNL) IF THEN ELSE(&quo...
- Thu Oct 10, 2024 7:35 am
- Forum: Vensim
- Topic: "No runs are loaded. Please load runs."
- Replies: 8
- Views: 970
Re: "No runs are loaded. Please load runs."
Have you run the model yet? If you are trying to use any output tools, you first need to run the model to generate results.
- Mon Oct 07, 2024 2:44 pm
- Forum: System Dynamics Discussion
- Topic: Logistic Model from Data
- Replies: 2
- Views: 765
Re: Logistic Model from Data
I cannot see why not. You would need PLE+/Pro/DSS to bring data into Vensim.
- Fri Oct 04, 2024 7:43 pm
- Forum: Vensim
- Topic: The error report was sent to us.
- Replies: 3
- Views: 717
Re: The error report was sent to us.
I've seen this on the Mac, and I'm not sure why it doesn't wait (it should).
An email address would be great, if it's a problem we haven't seen before, I can then get in touch.
An email address would be great, if it's a problem we haven't seen before, I can then get in touch.
- Fri Oct 04, 2024 7:41 pm
- Forum: Vensim
- Topic: Saving files
- Replies: 6
- Views: 1696
Re: Saving files
Almost certainly a permissions issue. You'll need to search the web for how to allow an application on MacOS access folders.
- Fri Oct 04, 2024 7:40 pm
- Forum: Vensim
- Topic: loading of data
- Replies: 5
- Views: 940
Re: loading of data
Your only option is to load it into a lookup table. Vensim PLE does not support external data.
- Wed Oct 02, 2024 3:58 pm
- Forum: Vensim
- Topic: Converting Stella model to Vensim
- Replies: 3
- Views: 676
Re: Converting Stella model to Vensim
If you can email the model to us, we may be able to get it to load.
- Mon Sep 30, 2024 7:02 am
- Forum: Vensim
- Topic: Finding unique feedback loops
- Replies: 3
- Views: 767
Re: Finding unique feedback loops
No. Even for small models, the number of loops can run into millions.
- Wed Sep 25, 2024 4:21 pm
- Forum: Vensim
- Topic: Issue with Python Integration of Vensim Model (Reinstall Vensim Error 977)
- Replies: 4
- Views: 939
Re: Issue with Python Integration of Vensim Model (Reinstall Vensim Error 977)
Your profile says you are a PLE user, the DLL does not come with PLE.melistugrul wrote: ↑Tue Sep 24, 2024 6:28 pm Hi, I have the same problem too. When I reinstall Vensim, dll file is automatically downloaded to "c:\program files (x86)\vensim" file. What can I do in that situation?
Or did you get the DLL from somewhere else?
- Fri Sep 20, 2024 10:34 am
- Forum: Vensim
- Topic: Issue with Python Integration of Vensim Model (Reinstall Vensim Error 977)
- Replies: 4
- Views: 939
Re: Issue with Python Integration of Vensim Model (Reinstall Vensim Error 977)
Your path to the DLL is wrong. Why did you move the DLL to "c:\program files (x86)\vensim"?
- Fri Sep 20, 2024 9:08 am
- Forum: Vensim
- Topic: Delay Fixed
- Replies: 5
- Views: 1026
Re: Delay Fixed
I think the sample model is a poor demonstration of the function. I'll replace it in the near future.
- Fri Sep 20, 2024 8:59 am
- Forum: Vensim
- Topic: Print-Every table bug?
- Replies: 1
- Views: 507
Re: Print-Every table bug?
It's a bug, and will be fixed in the next release.
- Thu Sep 19, 2024 7:30 am
- Forum: Vensim
- Topic: Switch to Light mode
- Replies: 4
- Views: 851
Re: Switch to Light mode
Yes, we'll get this fixed.
- Wed Sep 18, 2024 3:33 pm
- Forum: Vensim
- Topic: Switch to Light mode
- Replies: 4
- Views: 851
Re: Switch to Light mode
No, you cannot switch the app itself into light mode. You can switch the sketch though (under the view menu).
- Mon Sep 16, 2024 7:17 am
- Forum: Vensim
- Topic: How to convert .mdl code to R code
- Replies: 2
- Views: 666