docs-v2/content/flux/v0/stdlib/universe/totime.md

title	description	menu	weight	flux/v0/tags	introduced
toTime() function	`toTime()` converts all values in the `_value` column to time types.	flux_v0_ref name parent identifier toTime universe universe/toTime	101	transformations type-conversions	0.7.0

toTime() converts all values in the _value column to time types.

Supported data types

• string (RFC3339 timestamp)
• int
• uint

toTime() treats all numeric input values as nanosecond epoch timestamps.

Function type signature

(<-tables: stream[{A with _value: B}]) => stream[{A with _value: B, _value: time}]

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Parameters

tables

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

Examples

Convert an integer _value column to times

data
    |> toTime()

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Input data

_time	_value	*tag
2021-01-01T00:00:00Z	-20000000000000000	t1
2021-01-01T00:00:10Z	100000000000000000	t1
2021-01-01T00:00:20Z	70000000000000000	t1
2021-01-01T00:00:30Z	170000000000000000	t1
2021-01-01T00:00:40Z	150000000000000000	t1
2021-01-01T00:00:50Z	40000000000000000	t1

_time	_value	*tag
2021-01-01T00:00:00Z	190000000000000000	t2
2021-01-01T00:00:10Z	40000000000000000	t2
2021-01-01T00:00:20Z	-30000000000000000	t2
2021-01-01T00:00:30Z	190000000000000000	t2
2021-01-01T00:00:40Z	130000000000000000	t2
2021-01-01T00:00:50Z	10000000000000000	t2

Output data

_time	_value	*tag
2021-01-01T00:00:00Z	1969-05-14T12:26:40Z	t1
2021-01-01T00:00:10Z	1973-03-03T09:46:40Z	t1
2021-01-01T00:00:20Z	1972-03-21T04:26:40Z	t1
2021-01-01T00:00:30Z	1975-05-22T14:13:20Z	t1
2021-01-01T00:00:40Z	1974-10-03T02:40:00Z	t1
2021-01-01T00:00:50Z	1971-04-08T23:06:40Z	t1

_time	_value	*tag
2021-01-01T00:00:00Z	1976-01-09T01:46:40Z	t2
2021-01-01T00:00:10Z	1971-04-08T23:06:40Z	t2
2021-01-01T00:00:20Z	1969-01-18T18:40:00Z	t2
2021-01-01T00:00:30Z	1976-01-09T01:46:40Z	t2
2021-01-01T00:00:40Z	1974-02-13T15:06:40Z	t2
2021-01-01T00:00:50Z	1970-04-26T17:46:40Z	t2

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