Difference between revisions of "Dynamic using arrays"

Latest revision as of 22:36, 17 May 2016

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 Dynamic function), 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:

Variable Gasprice :=

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

@@ Line 3: / Line 3: @@
-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.
+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.
+'''Example:''' Expanding the example (see [[Dynamic function]]), 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]]
+:[[File:Chapter17_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:
+Using the new <code>Inflation</code> variable in the definition for <code>Gasprice</code>, the results show three different rates of increases in gasoline prices from 1990 to 1994:
- Gasprice:
+:<code>Variable Gasprice :=</code>
- Dynamic(1.2, Gasprice[Time - 1]*(1 + Inflation)) &rarr;
+:<code>Dynamic(1.2, Gasprice[Time - 1]*(1 + Inflation)) &rarr;</code>
-[[File:Chapter15_12.png]]
+:[[File:Chapter17_12.png]]
 ==See Also==
+* [[Dynamic]]
+* [[Dynamic function]]
 <footer>Dynamic initial values / {{PAGENAME}} / Dynamic dependencies</footer>