Documentation

timeWeightedAvg() function

The timeWeightedAvg() function outputs the time-weighted average of non-null records in a table as a float. Time is weighted using the linearly interpolated integral of values in the table.

Function type: Aggregate
Output data type: Float

timeWeightedAvg(unit: "_value")

Parameters

unit

Time duration used when computing the time-weighted average.

Data type: Duration

Examples

from(bucket: "example-bucket")
  |> range(start: -5m)
  |> filter(fn: (r) =>
    r._measurement == "cpu" and
    r._field == "usage_system"
  )
  |> timeWeightedAvg(unit: 1m)

Function definition

timeWeightedAvg = (tables=<-, unit) => tables
  |> integral(
    unit: unit,
    interpolate: "linear"
  )
  |> map(fn: (r) => ({
    r with
    _value: (r._value * float(v: uint(v: unit))) / float(v: int(v: r._stop) - int(v: r._start))
  }))

New! Cloud or OSS?

InfluxDB OSS 2.0 now generally available!

InfluxDB OSS 2.0 is now generally available and ready for production use. See the InfluxDB OSS 2.0 release notes.

For information about upgrading to InfluxDB OSS 2.0, see: