IfcIrregularTimeSeries

Item	SPF	XML	Change	Description
IFC2x3 to IFC4
IfcIrregularTimeSeries			MOVED	Schema changed from IFCTIMESERIESRESOURCE to IFCDATETIMERESOURCE.
StartTime	X	X	MODIFIED	Type changed from IfcDateTimeSelect to IfcDateTime.
EndTime	X	X	MODIFIED	Type changed from IfcDateTimeSelect to IfcDateTime.

Semantic definitions at the entity

Entity definition

In an irregular time series, unpredictable bursts of data arrive at unspecified points in time, or most time stamps cannot be characterized by a repeating pattern.

EXAMPLE A circulating pump cycles on and off at unpredictable times as dictated by the demands on the piping system; the amount of light in a classroom varies depending on when the lights are manually switched on and off and how many lamps are controlled by each switch.

HISTORY New entity in IFC2x2.

Attribute definitions

#	Attribute	Type	Cardinality	Description	G
9	Values	IfcIrregularTimeSeriesValue	L[1:?]	The collection of time series values.	X

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	G
IfcTimeSeries
1	Name	IfcLabel		An unique name for the time series.	X
2	Description	IfcText	?	A text description of the data that the series represents.	X
3	StartTime	IfcDateTime		The start time of a time series.	X
4	EndTime	IfcDateTime		The end time of a time series.	X
5	TimeSeriesDataType	IfcTimeSeriesDataTypeEnum		The time series data type.	X
6	DataOrigin	IfcDataOriginEnum		The origin of a time series data.	X
7	UserDefinedDataOrigin	IfcLabel	?	Value of the data origin if DataOrigin attribute is USERDEFINED.	X
8	Unit	IfcUnit	?	The unit to be assigned to all values within the time series. Note that mixing units is not allowed. If the value is not given, the global unit for the type of IfcValue, as defined at IfcProject.UnitsInContext is used.	X
	HasExternalReference	IfcExternalReferenceRelationship @RelatedResourceObjects	S[1:?]	Reference to an external reference, e.g. library, classification, or document information, that is associated to the IfcTimeSeries. IFC4 CHANGE New inverse attribute.	X
IfcIrregularTimeSeries
9	Values	IfcIrregularTimeSeriesValue	L[1:?]	The collection of time series values.	X

Formal representations

XML Specification

 <xs:element name="IfcIrregularTimeSeries" type="ifc:IfcIrregularTimeSeries" substitutionGroup="ifc:IfcTimeSeries" nillable="true"/>

 <xs:complexType name="IfcIrregularTimeSeries">

  <xs:complexContent>

   <xs:extension base="ifc:IfcTimeSeries">

    <xs:sequence>

     <xs:element name="Values">

      <xs:complexType>

       <xs:sequence>

        <xs:element ref="ifc:IfcIrregularTimeSeriesValue" maxOccurs="unbounded"/>

       </xs:sequence>

       <xs:attribute ref="ifc:itemType" fixed="ifc:IfcIrregularTimeSeriesValue"/>

       <xs:attribute ref="ifc:cType" fixed="list"/>

       <xs:attribute ref="ifc:arraySize" use="optional"/>

      </xs:complexType>

     </xs:element>

    </xs:sequence>

   </xs:extension>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcIrregularTimeSeries

 SUBTYPE OF (IfcTimeSeries);

  Values : LIST [1:?] OF IfcIrregularTimeSeriesValue;

END_ENTITY;

 EXPRESS-G diagram

	Serie mit unregelmäßigen Zeitabständen
	Irregular Time Series
	Séries temporelles irrégulières