Search found 39 matches

by krreddi
Sun Mar 13, 2011 7:11 pm
Forum: Vensim
Topic: Can we stop a simulation based on the value of a level value
Replies: 2
Views: 3540

Re: Can we stop a simulation based on the value of a level v

Hi JJ

Thanks for the reply. I could Implement it.

Krishna
by krreddi
Sun Mar 13, 2011 5:47 am
Forum: Vensim
Topic: Can we stop a simulation based on the value of a level value
Replies: 2
Views: 3540

Can we stop a simulation based on the value of a level value

Hi I am trying to stop a simulation when the value of a level variable exceeds a particular number. Is this possible?

Thanks
Krishna
by krreddi
Tue Nov 23, 2010 3:06 pm
Forum: Vensim
Topic: Allocate Available
Replies: 2
Views: 4420

Bob, I think I have sorted out that. I have tried for different values for pwidth and when the value is 0, the allocations are whole. The results are below and I hope it is right. Thanks for the reply. With Ptype 1 and pwidth 4 Simulation Allocation Priority[One,ppriority] Allocation Priority[Two,pp...
by krreddi
Mon Nov 22, 2010 6:56 pm
Forum: Vensim
Topic: Allocate Available
Replies: 2
Views: 4420

Allocate Available

Can we allocate whole (not fraction) resources to entities to address full demand in the order of priority? If yes what is the Allocation function. I am presently using allocate available function and in case there is no function to do the above, then what can we do to the result from allocate avail...
by krreddi
Mon Nov 22, 2010 4:31 pm
Forum: Vensim
Topic: Need help on sensitivity analysis of allocation priority
Replies: 5
Views: 7071

Thanks Bob. I have missed the detail in your previous mail. It is working now.
by krreddi
Sun Nov 21, 2010 3:24 pm
Forum: Vensim
Topic: Need help on sensitivity analysis of allocation priority
Replies: 5
Views: 7071

Bob, I have used tab delimited file for sensitivity analysis successfully but for this case where I am trying to change the allocation priority I am getting error and of course I have no idea how to save the allocation priority value. In normal case we have "Allocation Priority[One,pprofile]&qu...
by krreddi
Sat Nov 20, 2010 8:26 pm
Forum: Vensim
Topic: Need help on sensitivity analysis of allocation priority
Replies: 5
Views: 7071

Need help on sensitivity analysis of allocation priority

Hi, I am trying do a sensitivity analysis using external file. So I have a text file in tab delimited with all the values of the changing variables. I have successfully done for normal auxiliary variables but I am having problems with changing priorities. I am using the allocate available function t...
by krreddi
Tue Nov 16, 2010 12:09 am
Forum: Vensim
Topic: Vensim help on simulating a model
Replies: 16
Views: 17835

Tom and JJ,

Thank you for helping me.

Krishna
by krreddi
Fri Nov 12, 2010 5:27 pm
Forum: Vensim
Topic: Vensim help on simulating a model
Replies: 16
Views: 17835

Tom,

Thanks for looking you feedback on my model. I have realized that I was not looking for the sensitivity results at the right place. Anyways can we save and export the sensitivity results to an excel sheet? I can see only a graph but can we save the data and export the data?.

Thanks
Krishna
by krreddi
Fri Nov 12, 2010 5:11 pm
Forum: Vensim
Topic: Vensim help on simulating a model
Replies: 16
Views: 17835

Hi JJ, My model is a process involving a couple of different organizations working towards a common goal. I have different processing rates and quality coefficients etc. for all these organizations. While I can assign a distribution to some parameters I want to assign some constant to some and see t...
by krreddi
Fri Nov 12, 2010 5:02 pm
Forum: Vensim
Topic: Vensim help on simulating a model
Replies: 16
Views: 17835

Hi Tom, Firstly thanks for your correspondence. Answering your questions; My model is a complex process and it has got some 14 variables to vary and check for various combinations. The 2000 runs is a sample number there is no logic behind that, to be clear my model need to be simulated for say 5 yea...
by krreddi
Fri Nov 12, 2010 5:56 am
Forum: Vensim
Topic: Vensim help on simulating a model
Replies: 16
Views: 17835

Some more additional information regarding my model, which I feel would be helpful to you in helping me. I need to simulate the model for at least 2000 simulation runs, for each set of input values, to get the output. Please help me because it is so difficult to change the values for each simulation...
by krreddi
Fri Nov 12, 2010 4:44 am
Forum: Vensim
Topic: Vensim help on simulating a model
Replies: 16
Views: 17835

Lee,

Is Command Scripts option available for Professional version? I think it is available for only DSS. I tried but could not find any and in the manual its in the DSS help tab.

Thanks
Krishna
by krreddi
Fri Nov 12, 2010 4:36 am
Forum: Vensim
Topic: Vensim help on simulating a model
Replies: 16
Views: 17835

Tom, I have been trying to implement the sensitive analysis, following the limited instructions in the manual using a sample model. Had no success with that. I am attaching both the delimited text file and the model. Please help me with this. Thanks [Edited on 11-12-2010 by krreddi] [Edited on 11-12...
by krreddi
Thu Nov 11, 2010 7:26 pm
Forum: Vensim
Topic: Vensim help on simulating a model
Replies: 16
Views: 17835

Tom, Can you guide me a bit more on how to go about and the options to select or a tutorial for the sensitivity analysis you have advised. I do not want to mess up my model without being sure on how to go about. I could not find the from file option in the reference manual i downloaded. It would be ...
by krreddi
Thu Nov 11, 2010 3:14 pm
Forum: Vensim
Topic: Vensim help on simulating a model
Replies: 16
Views: 17835

I am using the professional Version
by krreddi
Thu Nov 11, 2010 3:44 am
Forum: Vensim
Topic: Vensim help on simulating a model
Replies: 16
Views: 17835

Vensim help on simulating a model

Hi, I have built a complex model and I am trying to simulate it. Everything is fine but I need to simulate the model for a large number of values of different variables. I was wondering if there is method to simulate in a less cumbersome way (Since at present i am changing the values of each variabl...
by krreddi
Thu Jul 15, 2010 3:23 am
Forum: Vensim
Topic: Need information on Vensim Professional Error
Replies: 9
Views: 9883

I am unable to upload the model it says the file is too big. FYI The size of the file 350KB. For your information I am upload the screen shot of the table view of the variable.

[Edited on 7-15-2010 by krreddi]
by krreddi
Thu Jul 15, 2010 3:20 am
Forum: Vensim
Topic: Need information on Vensim Professional Error
Replies: 9
Views: 9883

Hi all, Thanks for the information. I have been trying to troubleshoot the error but have no clue of ts origin. FYI i have copied different independently working models to a single model. When run independently all the models are simulating with no errors and sensible results. But the assembled mode...
by krreddi
Tue Jul 13, 2010 1:35 pm
Forum: Vensim
Topic: Need information on Vensim Professional Error
Replies: 9
Views: 9883

FYI I have made a couple of independent models and then have copied and pasted each of these models in a single model (which I call the assembled model). I don't get this error when I run the models separately, but when I run the assembled model I get this error.

Thanks
Krishna
by krreddi
Mon Jul 12, 2010 3:00 am
Forum: Vensim
Topic: Information on Molecules
Replies: 1
Views: 3126

Information on Molecules

I am trying to build molecules with no luck. Previously I was told to save a model in the molecules folder and use the tool bar to add it as molecule to Vensim. But I am unable to save my model in the molecules folder in the Vensim installation folder. Can anyone guide me in creating and using molec...
by krreddi
Mon Jul 12, 2010 2:55 am
Forum: Vensim
Topic: Need information on Vensim Professional Error
Replies: 9
Views: 9883

Need information on Vensim Professional Error

"Floating Point overflow saving to time 0.000000"

I am getting this error when allocating resources using allocation by priority function. Can anyone give insights about this error?.

Thanks
Krishna
by krreddi
Wed May 05, 2010 5:23 am
Forum: Vensim
Topic: Data inport from excel graph
Replies: 2
Views: 3685

Data inport from excel graph

Hi, I am planning to model a machine and have its performance graph which I want to use in the model. Is it possible to import the graph into vensim and based upon the X value can Vensim pick the corresponding Y value and use it in calculations?. Questions are welcome. I appreciate all your support ...
by krreddi
Mon May 03, 2010 8:50 pm
Forum: Vensim
Topic: Molecules
Replies: 3
Views: 4651

Thanks for the information.

Krishna
by krreddi
Sun May 02, 2010 5:04 pm
Forum: Vensim
Topic: Molecules
Replies: 3
Views: 4651

Molecules

I am not confident of the molecules concept. But want to know about some basic capabilities. Can we create molecules and use them in our models? If yes please suggest the corresponding documentation.

Thanks
Krishna