elapsed() function

elapsed() returns the time between subsequent records.

For each input table, elapsed() returns the same table without the first row (because there is no previous time to derive the elapsed time from) and an additional column containing the elapsed time.

Function type signature
(<-tables: stream[A], ?columnName: string, ?timeColumn: string, ?unit: duration) => stream[B] where A: Record, B: Record

For more information, see Function type signatures.



Unit of time used in the calculation. Default is 1s.


Column to use to compute the elapsed time. Default is _time.


Column to store elapsed times in. Default is elapsed.


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


Calculate the time between points in seconds

import "sampledata"
    |> elapsed(unit: 1s)

View example input and output

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