Since version: 1.12
The Velocity profile allows analysts to use expressions as input parameters to real-time and big data analytics tools. These expression parameters are used in selected tools to calculate field values, enrich features, detect incidents, buffer features, and more. This profile is only used in ArcGIS Velocity.
Context
The following products implement this profile:
Spatial reference
The spatial reference of the expression's data source1 determines the execution context's spatial reference.
Time zone
The execution context's default time zone is UTC.
Profile variables
| Variable Name | Type | Description |
|---|---|---|
| $feature | Feature | In analytic tools with single inputs, the feature being calculated, evaluated or operated upon. |
| $target | Feature | In analytic tools with two inputs, the feature being evaluated for filtering or enrichment. |
| $join | Feature | In analytic tools with two inputs, the feature supplying values for evaluation or enrichment of the target feature. |
| $analytic | Dictionary | Time values associated with the analytic such as start time, last end time, etc. |
Function bundles
Return types
Boolean | Date | Geometry | Number | Text
- Data sources for ArcGIS Velocity expressions come from real-time feeds.