Difference between revisions of "Dynamic using arrays"

Revision as of 23:10, 17 December 2015

Analytica User GuideDynamic SimulationDynamic using arrays

The initial value of a dynamic variable — that is, the first parameter to the Dynamic() function — can be a number, variable identifier, or other expression that evaluates to a single number, list, or array. Analytica evaluates a dynamic variable starting from each initial value, in each time period, so the result is a correctly dimensioned array.

Example: Expanding the example (see “Using the Dynamic() function” on page 322), suppose the inflation rate of gasoline is uncertain. Instead of providing a single numerical value, you could define the inflation rate as a list.

Using the new Inflation variable in the definition for Gasprice, the results show three different rates of increases in gasoline prices from 1990 to 1994:

Gasprice:
Dynamic(1.2, Gasprice[Time - 1]*(1 + Inflation)) →

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 <breadcrumbs>Analytica User Guide > Dynamic Simulation > {{PAGENAME}}</breadcrumbs>
-__TOC__
+The initial value of a dynamic variable — that is, the first parameter to the Dynamic() function — can be a number, variable identifier, or other expression that evaluates to a single number, list, or array. Analytica evaluates a dynamic variable starting from each initial value, in each time period, so the result is a correctly dimensioned array.
+'''Example:''' Expanding the example (see “[[Using the Dynamic() function]]” on page 322), suppose the inflation rate of gasoline is uncertain. Instead of providing a single numerical value, you could define the inflation rate as a list.
+[[File:Chapter15_11.png]]
+Using the new Inflation variable in the definition for Gasprice, the results show three different rates of increases in gasoline prices from 1990 to 1994:
+ Gasprice:
+ Dynamic(1.2, Gasprice[Time - 1]*(1 + Inflation)) &rarr;
+[[File:Chapter15_12.png]]
 ==See Also==
 <footer>Dynamic initial values / {{PAGENAME}} / Dynamic dependencies</footer>