covariance() function

Warning! This page documents an earlier version of Flux, which is no longer actively developed. Flux v0.50 is the most recent stable version of Flux.

The covariance() function computes the covariance between two columns.

Function type: Aggregate
Output data type: Float

covariance(columns: ["column_x", "column_y"], pearsonr: false, valueDst: "_value")

Parameters

columns

A list of two columns on which to operate. Required

Data type: Array of strings

pearsonr

Indicates whether the result should be normalized to be the Pearson R coefficient.

Data type: Boolean

valueDst

The column into which the result will be placed. Defaults to "_value".

Data type: String

Examples

from(bucket: "telegraf/autogen")
  |> range(start:-5m)
  |> covariance(columns: ["x", "y"])