Difference between revisions of "Dynamic initial values"

Revision as of 23:07, 17 December 2015

Analytica User GuideDynamic SimulationDynamic initial values

A dynamic definition of var usually includes the expression Self[Time-k] or var[Time-k], where k is the number of time periods to subtract from the current Time value. It is typically the case that at least 1 initial value is supplied.

As an example, when k in [Time-k] is greater than 1, suppose your car insurance policy depends on the premium you paid two years ago. To calculate your payments in 1992, you must refer to the amount paid in 1990. A dynamic variable representing such a rate for insurance needs two initial values for Time, such as:

Insurance:
Dynamic(600, 700, Insurance[Time - 2]*1.05) →

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 <breadcrumbs>Analytica User Guide > Dynamic Simulation > {{PAGENAME}}</breadcrumbs>
-__TOC__
+A dynamic definition of var usually includes the expression Self[Time-k] or var[Time-k],
+where k is the number of time periods to subtract from the current Time value. It is typically the case that at least 1 initial value is supplied.
+As an example, when k in [Time-k] is greater than 1, suppose your car insurance policy
+depends on the premium you paid two years ago. To calculate your payments in 1992, you must refer to the amount paid in 1990. A dynamic variable representing such a rate for insurance needs two initial values for Time, such as:
+ Insurance:
+ Dynamic(600, 700, Insurance[Time - 2]*1.05) &rarr;
+[[File:Chapter17_10.png]]
 ==See Also==
 <footer>Time index details / {{PAGENAME}} / Dynamic using arrays</footer>