#### 8.4.3.2 IfcIrregularTimeSeries

| Séries temporelles irrégulières
| Serie mit unregelmäßigen Zeitabständen

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.

XSD 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

Attribute Definitions:

Values | : | The collection of time series values.

Inheritance Graph:

ENTITY IfcIrregularTimeSeries

| ENTITY IfcTimeSeries

Name | : | IfcLabel;
Description | : | OPTIONAL IfcText;
StartTime | : | IfcDateTime;
EndTime | : | IfcDateTime;
TimeSeriesDataType | : | IfcTimeSeriesDataTypeEnum;
DataOrigin | : | IfcDataOriginEnum;
UserDefinedDataOrigin | : | OPTIONAL IfcLabel;
Unit | : | OPTIONAL IfcUnit;

| INVERSE

| ENTITY IfcIrregularTimeSeries

Values | : | LIST [1:?] OF IfcIrregularTimeSeriesValue;

END_ENTITY;

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