Search found 17 matches

by trgzrich
Thu Jul 15, 2010 3:49 pm
Forum: Vensim
Topic: Time axis on Sensitivity Analysis graph
Replies: 4
Views: 4578

Thank you very much, Tom!!!
by trgzrich
Thu Jul 15, 2010 1:19 pm
Forum: Vensim
Topic: Time axis on Sensitivity Analysis graph
Replies: 4
Views: 4578

How do l upgrade from version 5.9 to 5.9e and 5.10?
by trgzrich
Thu Jul 15, 2010 7:22 am
Forum: Vensim
Topic: Time axis on Sensitivity Analysis graph
Replies: 4
Views: 4578

Time axis on Sensitivity Analysis graph

Hi...My sensitivity analysis graph does not show time on the Time axis and the final time period i.e 2030 appears on the Y-axis. I have tried the options in the Control Panel, in vain. What could l have done wrong?. Attached is the graph.

Thanks
by trgzrich
Tue Jul 13, 2010 10:19 am
Forum: Vensim
Topic: Sensitivity on RAMP slope
Replies: 8
Views: 10153

Thank you very much!!!! It works.
by trgzrich
Tue Jul 13, 2010 7:43 am
Forum: Vensim
Topic: Sensitivity on RAMP slope
Replies: 8
Views: 10153

Thanks very much Tom, I think the first option is better for me. Do l need to enter this equation Energy Price Adj = ENERGY PRICE + RAMP(...) using "Add Eqn" in the equation editor for "ENERGY PRICE"? This doesn't seem to work; ENERGY PRICE=GET XLS DATA('ENERGYPRICES.xls', 'Sheet...
by trgzrich
Mon Jul 12, 2010 9:59 am
Forum: Vensim
Topic: Sensitivity on RAMP slope
Replies: 8
Views: 10153

I have this equation
ENERGY PRICE=GET XLS DATA('Energyprices.xls', 'Sheet1', '1', 'A2')

to get the 2000-2009 energy price data from the excel file. I would like to know how to use a RAMP function for the period after 2009, and thereafter conduct sensitivity tests on the slope.
by trgzrich
Mon Jul 12, 2010 9:24 am
Forum: Vensim
Topic: Sensitivity on RAMP slope
Replies: 8
Views: 10153

I first read the 2000-2009 energy price data using GET XLS DATA command, but l don't know how to add a RAMP function, to enable me carry out the sensitivity on the slope
by trgzrich
Mon Jul 12, 2010 9:01 am
Forum: Vensim
Topic: Sensitivity on RAMP slope
Replies: 8
Views: 10153

Sensitivity on RAMP slope

I have a model with a duration of 2000 to 2030. The baseline scenario is made under the assumption that the energy price is introduced directly from data series from 2000 to 2009 and will keep at the level of 2009’s until 2030. After 2009, a RAMP function is used. A sensitivity test on the slope of ...
by trgzrich
Fri Jun 18, 2010 7:36 am
Forum: Vensim
Topic: Integrating Vensim and GAMS
Replies: 36
Views: 37107

Which version should l use? and how do l get it?
by trgzrich
Thu Jun 17, 2010 12:26 pm
Forum: Vensim
Topic: Integrating Vensim and GAMS
Replies: 36
Views: 37107

I created the cmd file by typing the commands in Notepad

It still gives the message "File type cmd of Vensimrun.cmd is not known - Unable to load"
by trgzrich
Thu Jun 17, 2010 12:22 pm
Forum: Vensim
Topic: Integrating Vensim and GAMS
Replies: 36
Views: 37107

Sorry...I cut & paste my earlier post no. 5

I had already make the correction

I am using Vensim Professional 5.9
by trgzrich
Thu Jun 17, 2010 11:52 am
Forum: Vensim
Topic: Integrating Vensim and GAMS
Replies: 36
Views: 37107

SPECIAL>LOADNAME|C:\WorkClub\Briefcase 2010\Tuyi 2010\SD_Thesis\SDModel_1.mdl
SIMULATE>RUNNAME|base
MENU>RUN|o
MENU>VDF2DAT|base.vdf|base.dat|base.lst
MENU>EXIT
by trgzrich
Thu Jun 17, 2010 10:40 am
Forum: Vensim
Topic: Integrating Vensim and GAMS
Replies: 36
Views: 37107

It says "File type cmd of Vensimrun.cmd is not known - Unable to load

Could l have made a mistake in creating the cmd file?

[Edited on 6-17-2010 by trgzrich]
by trgzrich
Thu Jun 17, 2010 9:49 am
Forum: Vensim
Topic: Integrating Vensim and GAMS
Replies: 36
Views: 37107

sorry....i couldn't realize that mistake. But still, after copying "Vensimrun.cmd" to the vensim folder "C:\Program Files\Vensim>" then type "Vensim Vensimrun" at the command line, it opens Vensim with a blank window, implying that its not opening and simulating my mode...
by trgzrich
Thu Jun 17, 2010 8:26 am
Forum: Vensim
Topic: Integrating Vensim and GAMS
Replies: 36
Views: 37107

Thanks...I have decided to start by trying to run my Vensim model (SDModel.mdl) from the command line. I have written the following command file... SPECIAL>LOADNAME|C:\WorkClub\Briefcase 2010\Tuyi 2010\SD_Thesis\SDModel_1.mdl SIMULATE>RUNNAME|base MENU>RUN|o MENU>VDF2DAT|base.vdf|base.dat|base.lst M...
by trgzrich
Sat Jun 12, 2010 10:17 am
Forum: Vensim
Topic: Integrating Vensim and GAMS
Replies: 36
Views: 37107

Hi Tom,
Thanks for your response.

Actually, the Vensim and GAMS models are different, but are trying to solve same problem. I am thinking of a situation where some parameters are input to simulate the Vensim model and to run the GAMS model, so that results from both models can be compared
by trgzrich
Fri Jun 11, 2010 9:24 pm
Forum: Vensim
Topic: Integrating Vensim and GAMS
Replies: 36
Views: 37107

Integrating Vensim and GAMS

Hi.. I am working on a project that requires to integrate Vensim and GAMS (a mathematical optimization software) models into a decision support system framework. Whereby a decision maker inputs some parameters using a GUI so as to compare model results generated by both Vensim and GAMS. How do l go ...