Search found 4585 matches
- Sun Nov 11, 2012 1:31 pm
- Forum: Vensim
- Topic: Tracking Outputs
- Replies: 7
- Views: 3657
Re: Tracking Outputs
I would attempt to have two queues as Tom suggested, one for your samples and the other for "other" samples in the lab. You would then have a single processing rate for the lab. This would need to be split between the two queues based on the age of items in the queue. Get the oldest age of...
- Sun Nov 11, 2012 1:24 pm
- Forum: Vensim
- Topic: New user help (school assignment)
- Replies: 3
- Views: 2615
Re: New user help (school assignment)
I have attempted to quantify all variables the best I can but am getting a simultaneous error when attempting to simulate This sounds like you haven't put any delays into the system. I have a variable named "accidents" that flows into "injuries" "injuries" then flows i...
- Sun Nov 11, 2012 1:21 pm
- Forum: Vensim
- Topic: Bitmap Image in Venapp - Issue with MAC OS X
- Replies: 3
- Views: 2232
Re: Bitmap Image in Venapp - Issue with MAC OS X
Sorry for the delay replying. This is a bug we know about and will be fixed in the upcoming release.
- Wed Nov 07, 2012 4:11 pm
- Forum: Vensim
- Topic: [Beginner] Oscillation, period
- Replies: 2
- Views: 1909
Re: [Beginner] Oscillation, period
Am I right in saying you want the rainfall to behave like a sine wave (and not random)?
Adding units to your model is a really good idea as well.
Adding units to your model is a really good idea as well.
- Tue Nov 06, 2012 10:35 pm
- Forum: Vensim
- Topic: Run dll in 64bit system
- Replies: 4
- Views: 3434
Re: Run dll in 64bit system
Very short answer, no.
The Vensim DLL is 32 bit, and so can only be loaded by 32 bit apps.
The Vensim DLL is 32 bit, and so can only be loaded by 32 bit apps.
- Tue Nov 06, 2012 3:42 pm
- Forum: Vensim
- Topic: problem with synthesim
- Replies: 3
- Views: 2593
Re: problem with synthesim
An update on this. If you hide/remove "aléa horizon data" from the view, it should work ok. The bug will be fixed in the next release (it took a long time to find). That data equation has no values which was causing problems when trying to display the SyntheSim graph when override was acti...
- Mon Nov 05, 2012 5:45 pm
- Forum: Vensim
- Topic: Run optimization from excel
- Replies: 4
- Views: 2852
- Mon Nov 05, 2012 9:09 am
- Forum: Vensim
- Topic: Function to create Multiple "IF...ELSE" statements
- Replies: 9
- Views: 12901
Re: Function to create Multiple "IF...ELSE" statements
There are a number of ways. 1. You can nest the IF THEN ELSE statements result = IF THEN ELSE ( a > 0 , b , IF THEN ELSE ( a > 0.5 , c , 0 ) ) I personally don't like nesting IF THEN ELSE statements, it makes it difficult to read and debug what is happening. 2. Add IF THEN ELSE statements result = I...
- Mon Nov 05, 2012 9:06 am
- Forum: Vensim
- Topic: Simple Question
- Replies: 10
- Views: 5745
Re: Simple Question
1. If I call data from excel as a lookup or import excel data to lookup, it never shows graphical presentation? the graph area is blank but it simulate fine. How can I get the graph? Can you post an example? It shows fine for me. 2. Simulating perishable goods, realistically nothing left over, ever...
- Mon Nov 05, 2012 9:01 am
- Forum: Vensim
- Topic: Run optimization from excel
- Replies: 4
- Views: 2852
Re: Run optimization from excel
Start with the Excel example that ships with Vensim (usually found in C:\Users\Public\Vensim\dll\excel97\VENDLL.XLS). This example contains code to load, set and retrieve data/constants. Then you just need the following venapp commands to run the optimization. SIMULATE>OPTPARM|<optimization control ...
- Mon Nov 05, 2012 8:56 am
- Forum: Vensim
- Topic: Can locking windows lock you out?
- Replies: 1
- Views: 1843
Re: Can locking windows lock you out?
Is there a way to move (locked) windows down again? Unfortunately unlike in other Windows' applications I can't see a hand-tool to move windows other than by moving the upper border but that is hidden once it has been moved upward. If I am not missing something essential this might be a feature to ...
- Thu Nov 01, 2012 8:35 am
- Forum: Vensim
- Topic: What improvements would you like to see in Vensim?
- Replies: 150
- Views: 14531493
Re: What improvements would you like to see in Vensim?
If you right click with the mouse when you have the hand tool selected, you can pan around the view.
- Thu Nov 01, 2012 8:34 am
- Forum: Vensim
- Topic: [BEGINNER] A few questions
- Replies: 6
- Views: 5834
Re: [BEGINNER] A few questions
Can you enter your serial number on your profile please, you selected that you use DSS, but entered 0 as the serial number. 1. I have now a model of over one hundred variables in 6 different views and would like to know exactly how many variables in total as well as in each views. Is there a simple ...
- Wed Oct 31, 2012 2:43 pm
- Forum: Vensim
- Topic: VENAPP - How to build interfaces to simulators
- Replies: 3
- Views: 2353
Re: VENAPP - How to build interfaces to simulators
Venapps can do this.
The best place to start is definitely the help system though at
http://www.vensim.com/documentation/ind ... enapps.htm
It will take you though a simple design (and what to think about when building a GUI).
Tony.
The best place to start is definitely the help system though at
http://www.vensim.com/documentation/ind ... enapps.htm
It will take you though a simple design (and what to think about when building a GUI).
Tony.
- Wed Oct 31, 2012 8:43 am
- Forum: Vensim
- Topic: Time bound
- Replies: 15
- Views: 8734
Re: Time bound
I've put in two different methods in the attached model. Will one of these do?
- Fri Oct 26, 2012 7:41 pm
- Forum: Vensim
- Topic: Problems with an aging chain using conveyors
- Replies: 36
- Views: 27177
Re: Problems with an aging chain using conveyors
In the 2nd equation for Vehicles, change
to
Code: Select all
Vehiclesaging[agegroupyounger] - VEHICLESSOLD[agegroupolder] - VEHICLESSOLD[agegroupolder]
Code: Select all
Vehiclesaging[agegroupyounger] - VEHICLESSOLD[agegroupolder] - Vehiclesaging[agegroupolder]
- Fri Oct 26, 2012 6:29 pm
- Forum: Vensim
- Topic: Problems with an aging chain using conveyors
- Replies: 36
- Views: 27177
Re: Problems with an aging chain using conveyors
Can you upload the model in MDL format please? The VPM will not load.
Tony.
Tony.
- Thu Oct 25, 2012 1:12 pm
- Forum: Vensim
- Topic: [Venapp] TEXTMENU working just once
- Replies: 2
- Views: 1828
Re: [Venapp] TEXTMENU working just once
Can you post the venapp you are using? It's impossible to really advise you unless we can see what commands are being executed.
Tony.
Tony.
- Wed Oct 24, 2012 6:44 pm
- Forum: Vensim
- Topic: Lookup function
- Replies: 8
- Views: 3838
Re: Lookup function
Are you using PLE? If yes, just draw an arrow from your lookup to the variable where you need to use it.
- Wed Oct 24, 2012 12:18 pm
- Forum: Vensim
- Topic: Lookup function
- Replies: 8
- Views: 3838
Re: Lookup function
If you read through
http://www.vensim.com/documentation/ind ... ?usr08.htm
It will show you how to create a lookup (and how to use it).
http://www.vensim.com/documentation/ind ... ?usr08.htm
It will show you how to create a lookup (and how to use it).
- Wed Oct 24, 2012 8:22 am
- Forum: System Dynamics Discussion
- Topic: simple question regarding error
- Replies: 1
- Views: 3672
Re: simple question regarding error
Is there a Stella forum where you can ask for help? I know there are one or two who use this forum who are familiar with Stella, but you would most likely get a much faster answer elsewhere.
Tony.
Tony.
- Tue Oct 23, 2012 5:21 pm
- Forum: Vensim
- Topic: Lookup function
- Replies: 8
- Views: 3838
Re: Lookup function
Something like
Code: Select all
y = IF THEN ELSE ( x =0 , 0, lookup graph(x))
- Tue Oct 23, 2012 5:20 pm
- Forum: System Dynamics Discussion
- Topic: bipolar function
- Replies: 2
- Views: 4223
Re: bipolar function
Will the PULSE TRAIN work for you?
http://www.vensim.com/documentation/ind ... _train.htm
http://www.vensim.com/documentation/ind ... _train.htm
Re: New PLE
I don't remember PLE ever being able to view as text.
- Sun Oct 21, 2012 8:37 am
- Forum: Vensim
- Topic: Time bound
- Replies: 15
- Views: 8734
Re: Time bound
Each one of the help links I gave you has an example model.