Difference between revisions of "Time index"

(Created page with "Category:Analytica User Guide <breadcrumbs>Analytica User Guide > Dynamic Simulation > {{PAGENAME}}</breadcrumbs> __TOC__ ==See Also== <footer>Dynamic Simulation / {{PA...")
 
Line 2: Line 2:
 
<breadcrumbs>Analytica User Guide > Dynamic Simulation > {{PAGENAME}}</breadcrumbs>
 
<breadcrumbs>Analytica User Guide > Dynamic Simulation > {{PAGENAME}}</breadcrumbs>
  
−
__TOC__
 
  
 +
Dynamic simulation time periods are specified in the system variable Time. To perform dynamic simulation, you must provide a definition for Time.
 +
 +
To edit the definition of Time, select Edit Time from the Definition menu to open the Object window for Time.
 +
 +
Time is defined by default as a list of three numbers 0, 1, and 2. You might want to define Time as a list of years, as in the following example.
 +
 +
[[File:Chapter17_1.png]]
 +
 +
Time becomes the index for the array that results from the Dynamic() function.
 +
 +
<tip tilte="Tip"> A model can have only one definition Time — that is, one set of time periods for Dynamic()  functions. Any number of variables in the model can be defined using Dynamic().
 +
</Tip>
 +
 +
<tip title= "Tip">Tip A variation, Dynamic[T](), can be used to represent recurrences over indexes other than Time,but placing the index name in square brackets. This provides a way to express secondary recurrences if you’ve already used your Time index for sometime else. The dynamic concepts are introduced thoroughly in this chapter using Time, but if you have a loop using a different index, just substitute your other index for Time in what follows.
 +
</Tip>
  
 
==See Also==
 
==See Also==
 +
*[[Dynamic]()
 +
 +
 
<footer>Dynamic Simulation / {{PAGENAME}} / Dynamic function</footer>
 
<footer>Dynamic Simulation / {{PAGENAME}} / Dynamic function</footer>

Revision as of 22:43, 17 December 2015

Analytica User GuideDynamic SimulationTime index


Dynamic simulation time periods are specified in the system variable Time. To perform dynamic simulation, you must provide a definition for Time.

To edit the definition of Time, select Edit Time from the Definition menu to open the Object window for Time.

Time is defined by default as a list of three numbers 0, 1, and 2. You might want to define Time as a list of years, as in the following example.

Chapter17 1.png

Time becomes the index for the array that results from the Dynamic() function.

Tip
A model can have only one definition Time — that is, one set of time periods for Dynamic() functions. Any number of variables in the model can be defined using Dynamic().
Tip
Tip A variation, Dynamic[T](), can be used to represent recurrences over indexes other than Time,but placing the index name in square brackets. This provides a way to express secondary recurrences if you’ve already used your Time index for sometime else. The dynamic concepts are introduced thoroughly in this chapter using Time, but if you have a loop using a different index, just substitute your other index for Time in what follows.

See Also

  • [[Dynamic]()


Dynamic SimulationTime indexDynamic function
Comments


You are not allowed to post comments.