Search found 4568 matches

by Administrator
Thu Oct 25, 2012 1:12 pm
Forum: Vensim
Topic: [Venapp] TEXTMENU working just once
Replies: 2
Views: 1823

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.
by Administrator
Wed Oct 24, 2012 6:44 pm
Forum: Vensim
Topic: Lookup function
Replies: 8
Views: 3829

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.
by Administrator
Wed Oct 24, 2012 12:18 pm
Forum: Vensim
Topic: Lookup function
Replies: 8
Views: 3829

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).
by Administrator
Wed Oct 24, 2012 8:22 am
Forum: System Dynamics Discussion
Topic: simple question regarding error
Replies: 1
Views: 3659

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.
by Administrator
Tue Oct 23, 2012 5:21 pm
Forum: Vensim
Topic: Lookup function
Replies: 8
Views: 3829

Re: Lookup function

Something like

Code: Select all

y = IF THEN ELSE ( x =0 , 0, lookup graph(x))
by Administrator
Tue Oct 23, 2012 5:20 pm
Forum: System Dynamics Discussion
Topic: bipolar function
Replies: 2
Views: 4209

Re: bipolar function

by Administrator
Tue Oct 23, 2012 12:44 pm
Forum: Vensim
Topic: New PLE
Replies: 3
Views: 3522

Re: New PLE

I don't remember PLE ever being able to view as text.
by Administrator
Sun Oct 21, 2012 8:37 am
Forum: Vensim
Topic: Time bound
Replies: 15
Views: 8695

Re: Time bound

Each one of the help links I gave you has an example model.
by Administrator
Sat Oct 20, 2012 7:43 am
Forum: Vensim
Topic: Vensim PLE - Simultaneous Eqn Error
Replies: 4
Views: 4150

Re: Vensim PLE - Simultaneous Eqn Error

It would help if you could post the model (or a sample of it) so we could comment on it.
by Administrator
Sat Oct 20, 2012 7:43 am
Forum: Vensim
Topic: Time bound
Replies: 15
Views: 8695

Re: Time bound

There is lots in the help system for this. See http://www.vensim.com/documentation/index.html?fn_lookup_extrapolate.htm http://www.vensim.com/documentation/index.html?22820.htm http://www.vensim.com/documentation/index.html?fn_trend.htm http://www.vensim.com/documentation/index.html?fn_forecast.htm ...
by Administrator
Sat Oct 20, 2012 7:40 am
Forum: Vensim
Topic: publishing model via code
Replies: 5
Views: 3104

Re: publishing model via code

You can only publish a model for use with the Vensim DLL if you have Vensim DSS. The Vensim DLL is only licenced for use with Vensim DSS (the DLL only comes with DSS). So if you only have PLE, there is no way you can publish a model for use with the DLL as you are not licensed to do so. These are li...
by Administrator
Fri Oct 19, 2012 10:27 am
Forum: Vensim
Topic: Vensim PLE- giving priority
Replies: 3
Views: 2235

Re: Vensim PLE- giving priority

Is there a way to further allocate the flows based on priority between these 3 flows?
Yes, just replicate the structure I have put in. Or allocate based on a proportional demand basis.
by Administrator
Thu Oct 18, 2012 8:55 am
Forum: Vensim
Topic: Vensim PLE- giving priority
Replies: 3
Views: 2235

Re: Vensim PLE- giving priority

Is something like the attached what you need?
by Administrator
Sun Oct 14, 2012 10:17 am
Forum: Vensim
Topic: possible slight problem
Replies: 2
Views: 1854

Re: possible slight problem

There is a version 6.0A-1 on the Vensim website, this is there to fix this problem.

Can you try it?
by Administrator
Sat Oct 06, 2012 7:40 am
Forum: Vensim
Topic: publishing model via code
Replies: 5
Views: 3104

Re: publishing model via code

No. This is by design, you would not need Vensim if you could publish a model via some other means.
by Administrator
Thu Oct 04, 2012 10:55 am
Forum: Vensim
Topic: Time series data importing problem
Replies: 2
Views: 2516

Re: Time series data importing problem

Click Model->Simulate and then "Advanced". Here you can enter your data files.

See
http://www.vensim.com/documentation/ind ... ol_adv.htm
by Administrator
Wed Oct 03, 2012 11:08 am
Forum: Vensim
Topic: Multiple Rate Valve in one pipe
Replies: 5
Views: 4163

Re: Multiple Rate Valve in one pipe

I want to share different percentage to different variable from one variable through pipe. will it be appropriate to use two valve or just take a link from same arrow?
It's up to you. Give it a try and see if you get the results that you need from the model.
by Administrator
Wed Oct 03, 2012 11:08 am
Forum: Vensim
Topic: delay and pulse
Replies: 8
Views: 4715

Re: delay and pulse

Can I call level variable result(in minus out) as an outcome of per time step?
Can you try and explain this again, I don't understand your question.
by Administrator
Tue Oct 02, 2012 5:18 pm
Forum: Vensim
Topic: Special subscript values
Replies: 3
Views: 2234

Re: Special subscript values

One other thing to remember. Your profile indicates that you are a PLE user, subscripts are not possible with PLE.
by Administrator
Tue Oct 02, 2012 1:03 pm
Forum: Vensim
Topic: [BEGINNER] Time dependent auxiliary variables
Replies: 3
Views: 3255

Re: [BEGINNER] Time dependent auxiliary variables

Just type in the word "time",
eg
exp(-time)
by Administrator
Tue Oct 02, 2012 7:54 am
Forum: Sable
Topic: Slow Response Using SubScript Grid Command
Replies: 3
Views: 9977

Re: Slow Response Using SubScript Grid Command

A screenshot doesn't help at all. I need to be able to re-create the problem to have any chance of giving some advice.

The screen itself does not contain any data, if you can just email that to me I can have a go.
by Administrator
Mon Oct 01, 2012 8:06 am
Forum: Sable
Topic: Slow Response Using SubScript Grid Command
Replies: 3
Views: 9977

Re: Slow Response Using SubScript Grid Command

Can you post the offending screen to me?
by Administrator
Fri Sep 28, 2012 3:36 pm
Forum: Vensim
Topic: GET DIRECT SUBSCRIPT Problem (split/moved from other thread)
Replies: 2
Views: 3243

Re: GET DIRECT SUBSCRIPT Problem

The only thing you can do here is move the constant values into a CIN file (which is good practice anyway) and then just add the new constant values.
by Administrator
Fri Sep 28, 2012 7:58 am
Forum: Vensim
Topic: What improvements would you like to see in Vensim?
Replies: 150
Views: 11182032

Re: What improvements would you like to see in Vensim?

At my company we continously re-use a standard model, and we would like to reduce the effort required to do this, to set up a new instance of the model. For that, being able to add new elements to a family of subscripts at the touch of a button would be great - especially if that could also be done...
by Administrator
Tue Sep 25, 2012 4:36 pm
Forum: System Dynamics Discussion
Topic: From steady-state to dynamic model
Replies: 6
Views: 6983

Re: From steady-state to dynamic model

When you run a model, it generates a VDF file. This VDF file can be used in other simulations.

See
http://www.vensim.com/documentation/ind ... ?usr16.htm
and
http://www.vensim.com/documentation/ind ... ?21160.htm