Search found 9 matches

by hendrikstouten
Wed Dec 19, 2007 2:01 pm
Forum: Vensim
Topic: Fit between the simulated data and the reference mode
Replies: 3
Views: 4138

Thanks for the help.
I did not knew about the stats tool in vensim.
My mistake.

I am so glad that this forum exists. It helps me a lot since I am new to system dynamics and modelling.
In addition, I wish you a merry christmas and a happy New Year.

Hendrik Stouten
by hendrikstouten
Mon Dec 17, 2007 1:14 pm
Forum: Vensim
Topic: Fit between the simulated data and the reference mode
Replies: 3
Views: 4138

Fit between the simulated data and the reference mode

I am looking for a scientific way in Vensim to show that the obtained simulated results of my simulation model fit the historical data (reference mode). I have two lines in a graph. The first one visualizes the historical data of a paramater between 1995 and 2005. The second line shows the obtained ...
by hendrikstouten
Sun Aug 26, 2007 9:20 am
Forum: Vensim
Topic: Sensitivity simulation from a lookup graph
Replies: 4
Views: 3885

Many thanks for all the responses,

I will check out if I can normalize my lookup.

Kinds,

Hendrik Stouten
by hendrikstouten
Sat Aug 25, 2007 12:31 pm
Forum: Vensim
Topic: Sensitivity simulation from a lookup graph
Replies: 4
Views: 3885

Sensitivity simulation from a lookup graph

Hey, Vensim allows sensitivity analysis on a constant, but is there also a way to perform a sensitivity analysis on a lookup function? For instance, one of my variables in my model is a time serie of historical data from the year 1996 till 2005. From 2005 onwards, it is kept constant. This is put in...
by hendrikstouten
Thu Jun 28, 2007 4:01 pm
Forum: Vensim
Topic: How to refer to an subscript
Replies: 8
Views: 9992

Dear administrator,

Thanks for the help. Problem is solved.

Kind regards,

Hendrik
by hendrikstouten
Mon Jun 25, 2007 4:05 pm
Forum: Vensim
Topic: Decision making in Vensim
Replies: 4
Views: 6130

Dear Mr Wilson, Your attached model is indeed what I am looking for. Thank you very much, it helps me a lot. If possible, I am interested in you model about the North Sea. I am from Belgium and currently working in Sea Fisheries, so the North Sea is my major reseach area. Hope to hear more from your...
by hendrikstouten
Mon Jun 25, 2007 2:38 pm
Forum: Vensim
Topic: How to refer to an subscript
Replies: 8
Views: 9992

How to refer to an subscript

I have a small problem. I have a matrix (= two dimensional array), for instance: B1 B2 B3 ------------------------------- A1) 0 1 2 A2) 2 0 1 A3) 2 1 0 Given this matrix, I would like to refer for each A value to the subcript of B which has the lowest value in the matrix. Thus, For A1, the result sh...
by hendrikstouten
Mon Jun 25, 2007 11:31 am
Forum: Vensim
Topic: Decision making in Vensim
Replies: 4
Views: 6130

Thanks for the respons, But I am a beginner and not following completely. VECTOR SORT ORDER†(vec,direction): Your advice is to use this VECTOR SORT ORDER function with a negative order argument. But what is a negative order argument? It has to do with the 'direction', but which values can you put in...
by hendrikstouten
Mon Jun 25, 2007 9:43 am
Forum: Vensim
Topic: Decision making in Vensim
Replies: 4
Views: 6130

Decision making in Vensim

Hello, I am currenlty encountering some problems related to functions in converting a Ithink model to a vensim model. I am buidling a model about sea fishery fleet dynamics, more precise: How fishermen allocate their fishing efforts and how they invest. In allocating their effort, fishermen are sear...