VectorExtract

Extracts a single element from an input vector, converting VectorNumberData to NumberData.

Configuration

• id: Unique identifier for the operator
• index: Zero-based index of the element to extract (must be non-negative)

{
  "id": "ext1",
  "index": 1
}

Ports

• Input Port 0: VectorNumberData
• Output Port 0: NumberData (scalar value at the specified index)

Operation

For each input vector message, outputs the element at the specified index as a scalar NumberData message with the same timestamp.

Time	Input (vector)	Output (scalar)
1	[10.0, 20.0, 30.0]	20.0 (index=1)
2	[40.0, 50.0, 60.0]	50.0 (index=1)

Error Handling

• Throws if index is negative at construction
• Throws at runtime if index is out of bounds for the input vector