A node-red node to perform simple data analysis on a flow.
Data analysis tools for payload input data. This is a wrapper around the datakitjs Node library.
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.
The functions in the datakitjs library that are supported are:
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.