Horizon Attributes Reference

This page documents the PLEXOS Horizon class attributes and their default values, validation rules, and descriptions.

To look at the open access PLEXOS documentation, go to PLEXOS Horizon Index.

Use this reference when setting configuration values through PlexosDB attributes, for example with add_attribute, get_attribute, and list_attributes.

Horizon Attributes

Name	Units	Default Value	Validation Rule	Description
Chrono At a Time	-	1	>= 1	Number of steps in the chronological model
Chrono Date From	-	43831	>= 0	Start date for the chronological model
Chrono Period From	-	1	>= 1	Start interval for the chronological model
Chrono Period To	-	24	>= 1	End interval for the chronological model
Chrono Step Count	-	1	>= 1	Number of step types in each step of the chronological model
Chrono Step Type	-	2	In (-1,0,1,2,3)	Chronological model step type
Chronology	-	0	In (0,1)	Type of chronology used
Compression Factor	-	1	>= 1	Number of intervals to output per interval simulated
Date From	-	43831	>= 0	Start date of the planning horizon
Day Beginning	-	0	Between 0 And 23	Start hour of the trading day
Look-ahead At a Time	-	1	>= 1	Number of step types in each step of the chronological model look-ahead
Look-ahead Count	-	0	>= 0	Number of additional look-ahead steps in the planning horizon
Look-ahead Indicator	Yes/No	0	In (0,-1)	Flag if chronological model used a look-ahead
Look-ahead Periods per Day	-	24	Between 1 And 86400	Number of intervals in each trading day of the look-ahead
Look-ahead Type	-	1	In (0,1,2,6)	Step type for look-ahead in chronological model
Periods per Day	-	24	Between 1 And 86400	Number of intervals in each trading day
Step Count	-	1	>= 1	Number of steps in the planning horizon
Step Type	-	1	In (1,2,3,4)	Planning horizon step type
Week Beginning	-	0	Between -1 And 7	Start day for weekly constraints
Year Ending	-	0	Between 0 And 12	Last month of the fiscal year