Cascade TextLogger: Version 4.0
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# timestamp

timestamp -- Sets the time resolution for each line.

## Syntax

    (timestamp first|last|average [label ...])

## Arguments

`first|last|average`

  Specifies how the timestamp is to be assigned for each line:

  `first`

    Sets the timestamp to the time the first point was logged.

  `last`

    Sets the timestamp to the time the last point was logged. This is the recommended choice.

  `average`

    Sets the timestamp to the average log time of all the points.

`label`

  An optional log or group label.

## Description

The timestamp command lets you set the time resolution for each line. If no `label` is specified, this command sets a global default value for all logs and groups. Any specific value always overrides the global definition, regardless of the order in the configuration file or when a command is sent.

We recommend setting the timestamp to `last`, so the lines of output will be written in a non-decreasing order. Of course, this will only be true if the data itself is ordered incrementally by times. Otherwise, you may have to post-process the file and sort it to create a non-decreasing time sequence.

## See Also

tolerance

## Example

        (timestamp last)
        (timestamp first min_ht)

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