Search found 4568 matches

by Administrator
Thu Dec 21, 2023 9:00 am
Forum: Vensim
Topic: download stel2ven.zip and/or stel2ven.exe
Replies: 2
Views: 4099

Re: download stel2ven.zip and/or stel2ven.exe

These are too old to be of any use these days. They are for converting models that are over 20 years old.
by Administrator
Mon Dec 18, 2023 8:46 am
Forum: Vensim
Topic: trigger events
Replies: 2
Views: 1875

Re: trigger events

Can you provide more detail on what you are trying to do please?
by Administrator
Fri Dec 15, 2023 7:31 pm
Forum: Vensim
Topic: writing text withe the Venapps tool
Replies: 2
Views: 4538

Re: writing text withe the Venapps tool

Sorry, I do not know what you are asking for help with.

Venapps are not very flexible, all you can really do is add textonly for each line of the paragraph.
by Administrator
Fri Dec 15, 2023 11:28 am
Forum: Vensim
Topic: Polarity Font size and color
Replies: 5
Views: 2028

Re: Polarity Font size and color

GeorgeP wrote: Thu Dec 14, 2023 1:17 pm Hi, i try to change the polarity fontsize on arrows in vensim dss.
I right-click on arrow, click on courier which is the default and change size to 19. Nothing happens.
Any ideas what i do wrong here?
We know about this. Try setting it a 2nd time and it should work.
by Administrator
Fri Dec 15, 2023 11:28 am
Forum: Vensim
Topic: Sub-Subscripts?
Replies: 3
Views: 2960

Re: Sub-Subscripts?

You can define sub-ranges. For example

EUROPEAN COUNTRIES : ENGLAND, SCOTLAND, WALES, NORTHERN IRELAND, FRANCE
NON EURO COUNTRIES : USA, CANADA

COUNTRIES : EUROPEAN COUNTRIES, NON EURO COUNTRIES

Is this what you need to do?
by Administrator
Tue Dec 12, 2023 11:38 am
Forum: Vensim
Topic: Percent
Replies: 3
Views: 3610

Re: Percent

You haven't provided much information, so I'll guess.

Assuming you have a value that ranges between 0-1, create a new variable and plot that.

some variable = 0.5

some variable percent = 0.5 * 100
by Administrator
Mon Dec 11, 2023 4:36 pm
Forum: Vensim
Topic: Level initial series
Replies: 4
Views: 3825

Re: Level initial series

You cannot set the initial population to be a time series, it's an initial value, so a constant. But I think the following will do what you need. population = INTEG(birth-death, initial population) population used before projections start = if then else ( time < 2023, historical pop, population). No...
by Administrator
Wed Dec 06, 2023 9:42 am
Forum: Vensim
Topic: Uniform data
Replies: 2
Views: 3356

Re: Uniform data

There are a number of random distributions available in Vensim.
https://www.vensim.com/documentation/fn ... om+uniform
by Administrator
Tue Dec 05, 2023 3:36 pm
Forum: Vensim
Topic: older interface PLE 10.1.3
Replies: 2
Views: 3240

Re: older interface PLE 10.1.3

You cannot run the old interface on MacOS Sonoma.

viewtopic.php?t=7986
by Administrator
Tue Dec 05, 2023 7:50 am
Forum: Vensim
Topic: time schedule
Replies: 4
Views: 3875

Re: time schedule

Sorry, I do not understand your question.
by Administrator
Mon Dec 04, 2023 9:24 am
Forum: Vensim
Topic: time schedule
Replies: 4
Views: 3875

Re: time schedule

Sorry, I do not understand your question.

In addition, PLE does not support external data.
by Administrator
Sun Dec 03, 2023 11:47 am
Forum: Vensim
Topic: Reference mode
Replies: 1
Views: 1138

Re: Reference mode

You can't in PLE.
by Administrator
Fri Dec 01, 2023 8:37 am
Forum: Vensim
Topic: Output File
Replies: 6
Views: 4981

Re: Output File

hakani wrote: Thu Nov 30, 2023 10:55 am
tomfid wrote: Wed Nov 29, 2023 3:34 pm Or perhaps what you're looking for is an export of the dataset to Excel? Use Model>Export Dataset.
Are there feature at the PLE version of Vensim ?
No, you cannot export using PLE.

You can create a table though and copy/paste the values into Excel.
by Administrator
Wed Nov 29, 2023 1:53 pm
Forum: Vensim
Topic: Output File
Replies: 6
Views: 4981

Re: Output File

You can add them all together in a new variable and look at the value of that at FINAL TIME.
by Administrator
Tue Nov 28, 2023 1:52 pm
Forum: Vensim
Topic: Sum Function
Replies: 3
Views: 1431

Re: Sum Function

hakani wrote: Mon Nov 27, 2023 10:54 am i need summation funtion, How can I find the sum of the values entered in all months?
You need to use a level. For example, to sum up the total "deaths female calf" during the simulation,

Cumulative Deaths Female Calf = integ ( deaths female calf , 0 )
by Administrator
Thu Nov 23, 2023 9:34 am
Forum: Vensim
Topic: What improvements would you like to see in Vensim?
Replies: 150
Views: 11221030

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

ok, I'll raise it as a future enhancement.
by Administrator
Thu Nov 23, 2023 9:31 am
Forum: Vensim
Topic: Units conversion functions
Replies: 1
Views: 933

Re: Units conversion functions

Don't divide by 30 or multiply by 12. Vensim sees these as dimensionless numbers, so they will not change the units. If I see something like VALUE = some calculation / 30 My immediate question is "what does the 30 mean"? It's much better to create a constant, give it a name (average days p...
by Administrator
Tue Nov 21, 2023 11:48 am
Forum: Vensim
Topic: Unit Errors
Replies: 5
Views: 1533

Re: Unit Errors

I'd also advise you to take a look at this.
https://www.vensim.com/documentation/20395.html
by Administrator
Tue Nov 21, 2023 11:48 am
Forum: Vensim
Topic: Unit Errors
Replies: 5
Views: 1533

Re: Unit Errors

If that is correct, it probably should be something like

"Bull 12-18 Growing" = PULSE TRAIN(Avarage Herd First Calving Month, 0 , Calving interval , Productive LifeCyce )

And the units should be number/month.
by Administrator
Tue Nov 21, 2023 11:43 am
Forum: Vensim
Topic: comments about the new GUI
Replies: 7
Views: 7864

Re: comments about the new GUI

All I can say is we are working on it.
by Administrator
Tue Nov 21, 2023 9:49 am
Forum: Vensim
Topic: Efficient variable declaration on subranges
Replies: 3
Views: 1208

Re: Efficient variable declaration on subranges

No difference in terms of performance. I find it much clearer, but others could be different.
by Administrator
Tue Nov 21, 2023 9:48 am
Forum: Vensim
Topic: Unit Errors
Replies: 5
Views: 1533

Re: Unit Errors

I think you have more problems here. Looking at "Bull", the equation should be simple. I'm not sure why you've got a PULSE TRAIN in there. bull = integ("Bull 12-18 Growing" - deaths bull - saled bull, INITIAL BULL) Then "deaths bull" should be measured in "number/m...
by Administrator
Tue Nov 21, 2023 9:07 am
Forum: Vensim
Topic: Efficient variable declaration on subranges
Replies: 3
Views: 1208

Re: Efficient variable declaration on subranges

All will work. Personally, I would use option 1, I find that way to be the clearest, one equation for each subrange. I don't like using :EXCEPT: statements as it makes it just a little more difficult to figure out what equation is responsible for calculating something, especially if there are multip...
by Administrator
Tue Nov 21, 2023 9:04 am
Forum: Vensim
Topic: Publish to web not showing graphs
Replies: 7
Views: 3826

Re: Publish to web not showing graphs

For security reasons, you have to run via a server.
by Administrator
Tue Nov 21, 2023 9:03 am
Forum: Vensim
Topic: comments about the new GUI
Replies: 7
Views: 7864

Re: comments about the new GUI

As I've mentioned before, these new controls should be considered beta. We haven't got round to doing the help yet, but it's on the list of things to do. For instance it is possible with the button, to generate a Venapp command. But if I want to generate a list of Venapp commands, like in the Venapp...