node-red-contrib-prib-functions

node-red-contrib-prib-functions

Node-Red nodes for various functions:

• Data Analysis
• Test
• Load Injector
• Monitor Fow
• append

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Data Analysis

A set of data analysis functions that can be run over an array of data

Single value metrics:

• Average
• Maximum
• Median
• Minimun
• Range
• Standard Deviation
• Skewness
• Sum
• Variance

Array metrics:

• Deltas
• Deltas Normalised
• Moving Average Simple (SMA)
• Moving Average Cumulative (CMA)
• Moving Average Weighted (WMA)
• Moving Average Exponential (EMA/EWMA)
• Normalise
• Standardization (Z-score Normalization)

example:

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Test

Allows a test case for a message to allow simple testing of nodes. Injects a new message via mouse or message.cMessage sent to first port which can be consumed by other nodes and returned back to node in a loop. The Test node then checks against detailed expected payload result.

example:

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append

Append file(s) to payload. Cached to maximise performance. Require can be used to find file.

Test example:

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Load Injector

Inject messages for a set period of time with varying think time. Primary purpose is testing and useful for load/stress testing.

Test example:

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Monitor Flow

Add on wire between two flows to see message rates in status line. Rate sampled every second and provides rate last second / 10 seconds / 1 minute / 5 minutes.

Test example:

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Install

Run the following command in the root directory of your Node-RED install

npm install node-red-contrib-prib-functions

Tests

Test/example flow in test/generalTest.json

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Version

0.4.0 Add test, monitor flow, data analysis

0.0.1 base

Author

Peter Prib