Difference between revisions of "Dynamic using arrays"

(Created page with "Category:Analytica User Guide <breadcrumbs>Analytica User Guide > Dynamic Simulation > {{PAGENAME}}</breadcrumbs> __TOC__ ==See Also== <footer>Dynamic initial values /...")
 
 
(5 intermediate revisions by the same user not shown)
Line 2: Line 2:
 
<breadcrumbs>Analytica User Guide > Dynamic Simulation > {{PAGENAME}}</breadcrumbs>
 
<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 [[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:Chapter17_11.png]]
 +
 +
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:
 +
 +
:<code>Variable Gasprice :=</code>
 +
:<code>Dynamic(1.2, Gasprice[Time - 1]*(1 + Inflation)) &rarr;</code>
 +
 +
:[[File:Chapter17_12.png]]
  
 
==See Also==
 
==See Also==
 +
* [[Dynamic]]
 +
* [[Dynamic function]]
 +
 +
 
<footer>Dynamic initial values / {{PAGENAME}} / Dynamic dependencies</footer>
 
<footer>Dynamic initial values / {{PAGENAME}} / Dynamic dependencies</footer>

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.

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:

Variable Gasprice :=
Dynamic(1.2, Gasprice[Time - 1]*(1 + Inflation)) →
Chapter17 12.png

See Also


Dynamic initial valuesDynamic using arraysDynamic dependencies
Comments


You are not allowed to post comments.