Search found 25 matches
- Mon May 08, 2006 1:59 pm
- Forum: Vensim
- Topic: excel data
- Replies: 1
- Views: 2666
excel data
Hello, Question 1 I just wanted to verify something about the excel data that we input in the vensim model. If the excel column from which the model reads data, has about 400 rows worth of data, which values does the model show in the graph? does it take an average? for that particular month? Questi...
- Mon May 08, 2006 1:26 pm
- Forum: Vensim
- Topic: meaning of an error
- Replies: 4
- Views: 4360
- Thu May 04, 2006 12:32 pm
- Forum: Vensim
- Topic: meaning of an error
- Replies: 4
- Views: 4360
- Wed May 03, 2006 6:55 pm
- Forum: Vensim
- Topic: meaning of an error
- Replies: 4
- Views: 4360
meaning of an error
Hi,
Can someone please tell me what the error "Character not valid for a variable name or number" mean?
I would really appreciate it.
Thanks.
Can someone please tell me what the error "Character not valid for a variable name or number" mean?
I would really appreciate it.
Thanks.
- Mon Apr 17, 2006 4:40 pm
- Forum: Vensim
- Topic: limit on length of equation?
- Replies: 2
- Views: 3145
limit on length of equation?
Hi,
I wanted to know if there was a limit on the size of the equations to be written for a variable in vensim. I am using Vensim DSS. If I copy the equation and paste it in a word document, the equation comes up to be 3 pages long in a 10 point font. Please advice.
I wanted to know if there was a limit on the size of the equations to be written for a variable in vensim. I am using Vensim DSS. If I copy the equation and paste it in a word document, the equation comes up to be 3 pages long in a 10 point font. Please advice.
- Fri Apr 07, 2006 12:01 pm
- Forum: Vensim
- Topic: IF THEN ELSE statement
- Replies: 4
- Views: 4964
- Thu Apr 06, 2006 8:09 pm
- Forum: Vensim
- Topic: IF THEN ELSE statement
- Replies: 4
- Views: 4964
- Thu Apr 06, 2006 6:08 pm
- Forum: Vensim
- Topic: IF THEN ELSE statement
- Replies: 4
- Views: 4964
IF THEN ELSE statement
Is it possible to use the (:AND:) and/or (:OR:) in the 'IF' partof an IF THEN ELSE statement? I am getting errors. Please let me know. I cannot find much in the vensim manuals.
Thanks.
Thanks.
- Thu Mar 30, 2006 4:28 pm
- Forum: Vensim
- Topic: error while getting data from excel
- Replies: 2
- Views: 3996
error while getting data from excel
Hi, In the model that I am making, one of the variables has to read data from excel (constants). In the equation I have added the GET XLS CONSTANTS'filename.xls','sheetname', 'column name'), but when I try to run the simulation or partial simulation, I get an error saying "Unable to get constan...
- Thu Mar 23, 2006 2:28 pm
- Forum: Vensim
- Topic: a problem regarding the simulated values for stocks and flow
- Replies: 3
- Views: 3800
- Thu Mar 23, 2006 1:54 pm
- Forum: Vensim
- Topic: a problem regarding the simulated values for stocks and flow
- Replies: 3
- Views: 3800
- Wed Mar 22, 2006 7:06 pm
- Forum: Vensim
- Topic: Simulation results change in PLE and DSS
- Replies: 2
- Views: 2725
- Wed Mar 22, 2006 7:05 pm
- Forum: Vensim
- Topic: a problem regarding the simulated values for stocks and flow
- Replies: 3
- Views: 3800
a problem regarding the simulated values for stocks and flow
Bob, I am having problems with the results that Vensim shows for the stocks. for some reason instead of simply subtracting the outflow from mthe inflow to give the values for the stock, the results i get are that it adds up the inflow, outflow and the stcock value for the previous month and shows it...
- Fri Mar 10, 2006 3:36 pm
- Forum: Vensim
- Topic: Simulation results change in PLE and DSS
- Replies: 2
- Views: 2725
Simulation results change in PLE and DSS
Hello everyone, I have been trying to run a simulation, but i get different graphs/results in PLE and DSS. What is seen as a proper graph to the equations in PLE is seen as a straight line in DSS. Is it possible for this to happen? If so, how can I make the DSS version display the right graph. I hav...
- Tue Mar 07, 2006 10:14 pm
- Forum: Vensim
- Topic: equation reading data from an excel spreadsheet
- Replies: 2
- Views: 2867
- Tue Mar 07, 2006 9:56 pm
- Forum: Vensim
- Topic: equation reading data from an excel spreadsheet
- Replies: 2
- Views: 2867
equation reading data from an excel spreadsheet
Hello,
I wanted to know if there is a formula or equation or a way where the equation of a variable in vensim is such that it will take the value from a table in an excel spreadsheet?
I would really appreciate any help.
I wanted to know if there is a formula or equation or a way where the equation of a variable in vensim is such that it will take the value from a table in an excel spreadsheet?
I would really appreciate any help.
- Fri Feb 24, 2006 6:08 pm
- Forum: Vensim
- Topic: Negative values over time
- Replies: 4
- Views: 5164
- Fri Feb 24, 2006 4:48 pm
- Forum: Vensim
- Topic: Negative values over time
- Replies: 4
- Views: 5164
Negative values over time
For a particular variable, I have an equation. According to that equation the value of the variable becomes negative over time. How do I specify in the equation editor that it should show 0 for any values less than 0?
- Thu Feb 16, 2006 4:43 pm
- Forum: Vensim
- Topic: Linking windows in Venapp
- Replies: 1
- Views: 2284
Linking windows in Venapp
Thank you Bob. I also had a question about linking the different pages. I have read more of the DSS reference supplement, accordingly I have created windows for the main menu, model structure, scenario set-up. these Venapp pages run well on their own, but I don't know how to link these pages togethe...
Link windows in Venapp
Thank you Bob. I also had a question about linking the different pages. I have read more of the DSS reference supplement, accordingly I have created windows for the main menu, model structure, scenario set-up. these Venapp pages run well on their own, but I don't know how to link these pages togethe...
VENAPP
I'm trying to create windows in Venapp and I came across this command for a button. Can someone tell me what the "Ss" and "" stand for in the command shown below? or which part of the control definition window do they belong? BUTTON,"Scenario based on model constants",5...
- Thu Feb 02, 2006 12:56 pm
- Forum: Vensim
- Topic: multiple graphs in one window
- Replies: 1
- Views: 2394
multiple graphs in one window
Is it possible to show multiple graphs ( selected graphs important in the presentation) in a same window, something like a dashboard, where all the changes that you make in the model will in-turn be seen in these graphs in the window?
- Fri Jan 27, 2006 1:59 pm
- Forum: Vensim
- Topic: STEP function
- Replies: 2
- Views: 2971
- Thu Jan 26, 2006 6:14 pm
- Forum: Vensim
- Topic: STEP function
- Replies: 2
- Views: 2971
STEP function
I used the step function to show an increment of 620 every month, but it seems to just show me a value of 620 every month and not an increment. in the function i've used an initial value of 3800 and then a step funtion of STEP(620, 1)... is there a way to show an increment of 620 and not just 620 ev...
- Wed Jan 25, 2006 8:01 pm
- Forum: Vensim
- Topic: opening a .vdf file
- Replies: 2
- Views: 3152
opening a .vdf file
i created a model in vensim and ran the simulation. it then gives me a .vdf file. how do i view it? if i try to open the file, it asks me to select appropriate program from list. and if i open it in vensim then it gives me a blank screen.
[Edited on 1-25-2006 by LBD]
[Edited on 1-25-2006 by LBD]