IfcTimeOrRatioSelect

BACnet MVD

#### IfcTimeOrRatioSelect

Natural language names

| Time Or Ratio Select
| Sélection temps ou ratio.

Change log

Item | SPF | XML | Change | Description
--- | --- | --- | --- | ---
IFC2x3 to IFC4
IfcTimeOrRatioSelect |  |  | ADDED |

##### Semantic definitions at the type

Type definition

IfcTimeOrRatioSelect allows a value to be selected as being either a ratio or a time measure.

> HISTORY New select type in IFC4

Select definition

Type | Description
--- | ---
IfcRatioMeasure |
IfcDuration |

##### Formal representations

XML Specification
`<xs:group name="IfcTimeOrRatioSelect">
<xs:choice>
<xs:element ref="ifc:IfcDuration-wrapper"/>
<xs:element ref="ifc:IfcRatioMeasure-wrapper"/>
</xs:choice>
</xs:group>
`
EXPRESS Specification
`TYPE IfcTimeOrRatioSelect = SELECT (
IfcRatioMeasure,
IfcDuration);
END_TYPE;

EXPRESS-G diagram

`

References: IfcLagTime

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