docs-v2/content/flux/v0/stdlib/internal/promql/extrapolatedrate.md

title	description	menu	weight
promql.extrapolatedRate() function	`promql.extrapolatedRate()` is a helper function that calculates extrapolated rates over counters and is used to implement PromQL's [`rate()`](https://prometheus.io/docs/prometheus/latest/querying/functions/#rate), [`delta()`](https://prometheus.io/docs/prometheus/latest/querying/functions/#increase), and [`increase()`](https://prometheus.io/docs/prometheus/latest/querying/functions/#delta) functions.	flux_v0_ref name parent identifier promql.extrapolatedRate internal/promql internal/promql/extrapolatedRate	201

promql.extrapolatedRate() is a helper function that calculates extrapolated rates over counters and is used to implement PromQL's rate(), delta(), and increase() functions.

Important: The internal/promql package is not meant for external use.

Function type signature

(
    <-tables: stream[{A with _value: float, _time: time, _stop: time, _start: time}],
    ?isCounter: bool,
    ?isRate: bool,
) => stream[{B with _value: float}]

{{% caption %}} For more information, see Function type signatures. {{% /caption %}}

Parameters

tables

Input data. Default is piped-forward data (<-).

isCounter

Data represents a counter.

isRate

Data represents a rate.