Search found 4 matches

by Steve
Tue Jul 05, 2005 8:40 am
Forum: Vensim
Topic: Ageing chain - Timing process
Replies: 1
Views: 2931

Ageing chain - Timing process

Hi, In attachment you will find an ageing chain of the bulk fleet. The idea is that i want to distinguish between the fleet (stock of vessels) and the active fleet. Their difference is in the Lay up of vessels (happens when age fleet > marginal age vessel). I succeeded in modelling this albeit their...
by Steve
Mon Sep 20, 2004 2:37 pm
Forum: Vensim
Topic: Two dimensional lookup
Replies: 2
Views: 5135

Two dimensional lookup

Hi, I would like to be able to make a lookup with two variables. On the basis of an oil price difference and a hedging time period, a premium should be calculated (with interpolation for other months between 3 and 9). Rather than using different (consecutive) lookups, is there a good way to implemen...
by Steve
Fri Mar 26, 2004 8:14 pm
Forum: Vensim
Topic: Shift if true
Replies: 11
Views: 9649

Shift if true

Hi,

Is it possible that in future Vensim versions, the shift if true function will be made more enjoyable ;-( or replaced by another function which places something new at the end of the array? Because now every variable linked must be adjusted with this SIT-function?

Thanks
by Steve
Fri Mar 26, 2004 7:55 pm
Forum: Vensim
Topic: Cycle Time
Replies: 3
Views: 6323

Indeed, with a number of sample if trues or what can be done is make a view thats keeps track op flows..Cfr. vessel tracking