node-red-contrib-datakitjs 0.2.1

A node-red node to perform simple data analysis on a flow.

npm install node-red-contrib-datakitjs

Data analysis tools for payload input data. This is a wrapper around the datakitjs Node library.

Inputs

Normally, the value of msg.payload is saved into the data set. When a message with a topic that ends in a datakit function name is received, that datakitjs is calculated and output as the msg.payload. For example, a message with the topic data/mean would output the mean of the data received so far. Optionally, the function name can be stripped from the topic. For datakitjs functions that require a parameter, the parameter is passed in using msg.payload.

Functions

The functions in the datakitjs library that are supported are:

Statistical Methods

  • mean
  • sd
  • vari
  • cov
  • reg

Convenience Methods

  • seq
  • rep
  • isclose
  • sum
  • prod
  • min
  • max

Random Numbers

  • exp
  • norm
  • uni

In addition, two other functions are implemented:

  • size - returns the size of the data set
  • clear - clears the data set

For more detailed information about the functions see the datakitjs API documentation.

Node Info

Version: 0.2.1
Updated 4 months ago
License: MIT

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Nodes

  • datakit

Keywords

  • node-red
  • datakitjs

Maintainers

  • atm0s1