Overview

This node Aggregates Metadata that matches specified wildcard patterns and adds resulting value for subsequent nodes to use. It is useful when you want to build triggers that act across various metadata properties (such as when an object enters any ROIs vs a specific ROI in the Occupancy Monitor Node).

Inputs & Outputs

Inputs : 1, Media Format : Raw Video
Outputs : 1, Media Format: Raw Video
Output Metadata : Aggregated Value

Properties

Property	Description	Type	Default	Required
`metadata_patterns`	ex. `nodes.annotate_motion1.rois..motion`. Comma-separated metadata pattern(s) to aggregate. Replace desired aggregation level with . Format: comma-separated metadata paths or patterns.	`string`	`null`	Yes
`aggregation_mode`	Aggregation mode. Options: Any (logical OR) (`any`): Convert any numbers to boolean: Non-zero = True; All (logical AND) (`all`): Convert any numbers to boolean: Non-zero = True; Sum (`sum`): Convert any booleans to numbers: True = 1, False = 0.	`enum`	`any`	Yes

Output Metadata

The fields below are declared by this node's metadata schema; the JSON values are representative examples.

Path	Type	Description
`nodes.<node_id>.aggregate_value`	`boolean or number`	Boolean or number containing the result aggregated from the configured metadata values.
`nodes.<node_id>.type`	`string`	Identifies the node type that produced this metadata.

JSON example

{
  "nodes": {
    "aggregate_metadata1": {
      "aggregate_value": 0,
      "type": "aggregate_metadata"
    }
  }
}