Search found 4598 matches
- Mon Apr 08, 2024 8:07 am
- Forum: Vensim
- Topic: Lables on Flows
- Replies: 2
- Views: 1641
Re: Lables on Flows
Looking in more detail at this, if you move the variable attached to the flow, it does move to the correct place. The next release will have this fixed.
- Sat Apr 06, 2024 6:44 am
- Forum: Vensim
- Topic: Help me with Staff model
- Replies: 5
- Views: 419
Re: Help me with Staff model
All in the help system including examples.
https://www.vensim.com/documentation/fn ... ml?q=queue
https://www.vensim.com/documentation/fn ... ml?q=queue
- Sat Apr 06, 2024 6:43 am
- Forum: System Dynamics Discussion
- Topic: World 3 Model Download
- Replies: 5
- Views: 887
Re: World 3 Model Download
It's available with Vensim.
On Windows, you should find it in
C:\Users\Public\Vensim\Models\Sample\WRLD3-03
On Windows, you should find it in
C:\Users\Public\Vensim\Models\Sample\WRLD3-03
- Fri Apr 05, 2024 5:13 pm
- Forum: Vensim
- Topic: Help me with Staff model
- Replies: 5
- Views: 419
Re: Help me with Staff model
You could also consider a queue instead as you can remove things from one of those.
- Fri Apr 05, 2024 3:07 pm
- Forum: Vensim
- Topic: Help me with Staff model
- Replies: 5
- Views: 419
Re: Help me with Staff model
I'd start by removing "people quitting" and thinking about implementing it in a different way. The equation is too complex for that anyway. As you are directly delaying "People to train" to calculate "People trained", if you do have people quitting, "Training"...
- Wed Apr 03, 2024 3:41 pm
- Forum: Vensim
- Topic: Vensim PLE Plus 10.1.3 - Monte Carlo Button
- Replies: 2
- Views: 336
- Wed Mar 27, 2024 1:36 pm
- Forum: Vensim
- Topic: double-click selection
- Replies: 5
- Views: 3101
Re: double-click selection
No, there are hundreds of places in Vensim where you can select text, that's why I asked for more info.
- Tue Mar 26, 2024 1:06 pm
- Forum: System Dynamics Discussion
- Topic: Cumulative flow does not match stock
- Replies: 2
- Views: 2937
Re: Cumulative flow does not match stock
1. Does your model pass the units test?
2. Have you selected an appropriate time step? https://www.vensim.com/documentation/ref_time_step.html
It's impossible to comment further without the model.
2. Have you selected an appropriate time step? https://www.vensim.com/documentation/ref_time_step.html
It's impossible to comment further without the model.
- Mon Mar 25, 2024 9:09 pm
- Forum: Vensim
- Topic: double-click selection
- Replies: 5
- Views: 3101
Re: double-click selection
Can you provide more detail please? Where are you clicking things? Can you give an example?
- Mon Mar 25, 2024 6:58 pm
- Forum: Vensim
- Topic: Lables on Flows
- Replies: 2
- Views: 1641
Re: Lables on Flows
We'll get this fixed as soon as possible.
- Sat Mar 23, 2024 8:55 pm
- Forum: Vensim
- Topic: Vensim 8.0.0 download
- Replies: 3
- Views: 1762
Re: Vensim 8.0.0 download
8.0.0 does not even run on modern Macs, you are best off using the latest version.
- Sat Mar 23, 2024 6:27 pm
- Forum: Vensim
- Topic: Floating Point Error
- Replies: 3
- Views: 1741
Re: Floating Point Error
To give you a little more help, try this burning of coal = min ( available coal resources / time step , base burning rate ) This equation burns the "base burning rate" until all the "available coal resources" are used up. This equation takes "base burning rate" from the...
- Sat Mar 23, 2024 6:24 pm
- Forum: Vensim
- Topic: Floating Point Error
- Replies: 3
- Views: 1741
Re: Floating Point Error
You do have units errors in your model.
Start with "base burning rate". That should not be measured in 1/year, I'm pretty certain it will be tonnes/year. Same for "base discovery rate". Correct the units for these, and you'll see where the error is.
Start with "base burning rate". That should not be measured in 1/year, I'm pretty certain it will be tonnes/year. Same for "base discovery rate". Correct the units for these, and you'll see where the error is.
- Sat Mar 23, 2024 7:41 am
- Forum: Vensim
- Topic: it is frustrating!
- Replies: 25
- Views: 4135
Re: it is frustrating!
All I did was put the graph onto the sketch using the IO tool.
- Thu Mar 21, 2024 9:17 am
- Forum: Vensim
- Topic: it is frustrating!
- Replies: 25
- Views: 4135
Re: it is frustrating!
Try the attached.
- Wed Mar 20, 2024 2:51 pm
- Forum: Vensim
- Topic: Vensim 8.0.0 download
- Replies: 3
- Views: 1762
Re: Vensim 8.0.0 download
All you can use is the latest version.
- Tue Mar 19, 2024 12:01 pm
- Forum: Vensim
- Topic: it is frustrating!
- Replies: 25
- Views: 4135
Re: it is frustrating!
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...
- Mon Mar 18, 2024 8:42 am
- Forum: Vensim
- Topic: publishing a model independently from its directory
- Replies: 3
- Views: 1641
Re: publishing a model independently from its directory
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.
- Mon Mar 18, 2024 8:41 am
- Forum: System Dynamics Discussion
- Topic: Request of SD advice - Ph.D Thesis results
- Replies: 5
- Views: 1858
Re: Request of SD advice - Ph.D Thesis results
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 ...
- Mon Mar 18, 2024 8:37 am
- Forum: Vensim
- Topic: it is frustrating!
- Replies: 25
- Views: 4135
Re: it is frustrating!
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.
- Wed Mar 13, 2024 4:22 pm
- Forum: Vensim
- Topic: Copy & Paste between models
- Replies: 4
- Views: 2512
- Wed Mar 13, 2024 7:20 am
- Forum: Vensim
- Topic: Problems with MCMC and optimize payoff
- Replies: 1
- Views: 1565
Re: Problems with MCMC and optimize payoff
We would need the model and VPD file to offer any help. There is clearly an error in that file.
- Tue Mar 12, 2024 3:13 pm
- Forum: Vensim
- Topic: Sensitivity simulation - changing the file output format
- Replies: 1
- Views: 1514
Re: Sensitivity simulation - changing the file output format
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...
- Tue Mar 12, 2024 2:42 pm
- Forum: Vensim
- Topic: Help with PULSE TRAIN and random variable
- Replies: 6
- Views: 2141
Re: Help with PULSE TRAIN and random variable
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.
- Sat Mar 09, 2024 3:51 pm
- Forum: Vensim
- Topic: it is frustrating!
- Replies: 25
- Views: 4135