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 # composite:unit\_system\_default

 Last update: 31.07.2026 

**Version: 0.0.0**

## Description

Returns the in the rst stream if specified, otherwise return the default unit system.

## Inputs

InputNameExpected type(s)Description**Pin 3**   
Requiredstreams[`streams_container`](../../core-concepts/dpf-types.md#streams-container)Stream with result file**Pin 50**   
Requireddefault\_unit\_system`class boost::optional<class dataProcessing::unit::CUnitSystem>`default\_unit\_system## Outputs

OutputNameExpected type(s)Description**Pin 0**unit\_system`class dataProcessing::unit::CUnitSystem`unit\_system## Configurations

NameExpected type(s)Default valueDescription**mutex**[`bool`](../../core-concepts/dpf-types.md#standard-types)falseIf this option is set to true, the shared memory is prevented from being simultaneously accessed by multiple threads.## Scripting

**Category**: composite

**Plugin**: composite

**Scripting name**: unit\_system\_default

**Full name**: composite.unit\_system\_default

**Internal name**: composite::unit\_system\_default

**License**: None

## Changelog

- Version 0.0.0: Initial release.