Documentation

pearsonr() function

pearsonr() returns the covariance of two streams of tables normalized to the Pearson R coefficient.

Function type signature
(on: [string], x: A, y: B) => stream[C] where C: Record
For more information, see Function type signatures.

Parameters

x

(Required) First input stream.

y

(Required) Second input stream.

on

(Required) List of columns to join on.

Examples

Return the covariance between two streams of tables

import "generate"

stream1 =
    generate.from(
        count: 5,
        fn: (n) => n * n,
        start: 2021-01-01T00:00:00Z,
        stop: 2021-01-01T00:01:00Z,
    )
        |> toFloat()

stream2 =
    generate.from(
        count: 5,
        fn: (n) => n * n * n / 2,
        start: 2021-01-01T00:00:00Z,
        stop: 2021-01-01T00:01:00Z,
    )
        |> toFloat()

pearsonr(x: stream1, y: stream2, on: ["_time"])

View example output


Was this page helpful?

Thank you for your feedback!


Linux Package Signing Key Rotation

All signed InfluxData Linux packages have been resigned with an updated key. If using Linux, you may need to update your package configuration to continue to download and verify InfluxData software packages.

For more information, see the Linux Package Signing Key Rotation blog post.

State of the InfluxDB Cloud (IOx) documentation

The new documentation for InfluxDB Cloud backed by InfluxDB IOx is a work in progress. We are adding new information and content almost daily. Thank you for your patience!

If there is specific information you’re looking for, please submit a documentation issue.