IfcGridPlacementDirectionSelect

BACnet MVD

#### IfcGridPlacementDirectionSelect

Natural language names

| Grid Placement Direction Select
| Sélection de la direction du placement de la grille

Change log

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

##### Semantic definitions at the type

Type definition

IfcGridPlacementDirectionSelect enables the choice of defining a grid placement be either an explicit direction, or by referencing a second grid intersection to provide the direction.

> HISTORY New select type in IFC4.

Select definition

Type | Description
--- | ---
IfcVirtualGridIntersection |
IfcDirection |

##### Formal representations

XML Specification
`<xs:group name="IfcGridPlacementDirectionSelect">
<xs:choice>
<xs:element ref="ifc:IfcDirection"/>
<xs:element ref="ifc:IfcVirtualGridIntersection"/>
</xs:choice>
</xs:group>
`
EXPRESS Specification
`TYPE IfcGridPlacementDirectionSelect = SELECT (
IfcVirtualGridIntersection,
IfcDirection);
END_TYPE;

EXPRESS-G diagram

`

References: IfcGridPlacement

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