Package Exports

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (node-red-contrib-multi-stat) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

node-red-contrib-multi-stat

Node-RED Multi-Source Statistics - calculates Min/Max/Avg across multiple topics.

Features

Aggregates values from multiple sources (topics)
Calculates Min/Max/Avg in real-time
Configurable decimal places
Minimum topic count before first output
Reset and remove via msg

Behavior

Each source is identified by msg.topic
Stores only the latest value per topic (no history)
On each input: update value → recalculate statistics → output

Example

Input: topic="room1", payload=21.5
Input: topic="room2", payload=19.8
Input: topic="room3", payload=23.1

Output:
{
  min: 19.8,
  max: 23.1,
  avg: 21.47,
  count: 3,
  values: { room1: 21.5, room2: 19.8, room3: 23.1 }
}

Configuration

Property	Description	Default
Decimals	Decimal places for min/max/avg	2
Min. Topics	Minimum topics before first output	1

Input

msg.payload - Numeric value
msg.topic - Required - Unique source ID

Runtime Overrides

Property	Description
`msg.reset`	`true` = clear all values
`msg.remove`	`true` = remove this topic

Output

{
  "min": 19.8,
  "max": 23.1,
  "avg": 21.47,
  "count": 3,
  "values": { "room1": 21.5, "room2": 19.8, "room3": 23.1 }
}

Use Cases

Application	Description
Room temperatures	Min/Max/Avg across all rooms
Sensor network	Aggregated readings
Load balancing	Min/Max across multiple servers

Node Status

Idle - Waiting for data
Waiting (1/3 Topics) - minTopics not yet reached
3 Topics | Min 19.8 Max 23.1 Avg 21.5 - Active statistics

Author

sr.rpo

License

MIT