IfcTimeSeries

Natural language names
Serie mit Zeitabständen
Time Series
Séries temporelles
Change log
ItemSPFXMLChangeDescription
IFC2x3 to IFC4 4.0.0.0
    IfcTimeSeriesMOVEDSchema changed from IFCTIMESERIESRESOURCE to IFCDATETIMERESOURCE.
Semantic definitions at the entity
Entity definition

A time series is a set of a time-stamped data entries. It allows a natural association of data collected over intervals of time. Time series can be regular or irregular. In regular time series data arrive predictably at predefined intervals. In irregular time series some or all time stamps do not follow a repetitive pattern and unpredictable bursts of data may arrive at unspecified points in time.

The modeling of buildings and their performance involves data that are generated and recorded over a period of time. Such data cover a large spectrum, from weather data to schedules of all kinds to status measurements to reporting to everything else that has a time related aspect. Their correct placement in time is essential for their proper understanding and use, and the IfcTimeSeries subtypes provide the appropriate data structures to accommodate these types of data.

HISTORY  New entity in IFC2x2.

Attribute definitions
#AttributeTypeCardinalityDescription G
1NameIfcLabel An unique name for the time series. X
2DescriptionIfcText? A text description of the data that the series represents. X
3StartTimeIfcDateTime The start time of a time series. X
4EndTimeIfcDateTime The end time of a time series. X
5TimeSeriesDataTypeIfcTimeSeriesDataTypeEnum The time series data type. X
6DataOriginIfcDataOriginEnum The origin of a time series data. X
7UserDefinedDataOriginIfcLabel? Value of the data origin if DataOrigin attribute is USERDEFINED. X
8UnitIfcUnit? 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
HasExternalReferenceIfcExternalReferenceRelationship
@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
Inherited definitions from supertypes
Entity inheritance IfcIrregularTimeSeries IfcRegularTimeSeries
Attribute inheritance
#AttributeTypeCardinalityDescriptionG
IfcTimeSeries
1NameIfcLabel An unique name for the time series. X
2DescriptionIfcText? A text description of the data that the series represents. X
3StartTimeIfcDateTime The start time of a time series. X
4EndTimeIfcDateTime The end time of a time series. X
5TimeSeriesDataTypeIfcTimeSeriesDataTypeEnum The time series data type. X
6DataOriginIfcDataOriginEnum The origin of a time series data. X
7UserDefinedDataOriginIfcLabel? Value of the data origin if DataOrigin attribute is USERDEFINED. X
8UnitIfcUnit? 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
HasExternalReferenceIfcExternalReferenceRelationship
@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
Formal representations
XML Specification
 <xs:element name="IfcTimeSeries" type="ifc:IfcTimeSeries" abstract="true" substitutionGroup="ifc:Entity" nillable="true"/>
 <xs:complexType name="IfcTimeSeries" abstract="true">
  <xs:complexContent>
   <xs:extension base="ifc:Entity">
    <xs:sequence>
     <xs:element name="Unit" nillable="true" minOccurs="0">
      <xs:complexType>
       <xs:group ref="ifc:IfcUnit"/>
      </xs:complexType>
     </xs:element>
    </xs:sequence>
    <xs:attribute name="Name" type="ifc:IfcLabel" use="optional"/>
    <xs:attribute name="Description" type="ifc:IfcText" use="optional"/>
    <xs:attribute name="StartTime" type="ifc:IfcDateTime" use="optional"/>
    <xs:attribute name="EndTime" type="ifc:IfcDateTime" use="optional"/>
    <xs:attribute name="TimeSeriesDataType" type="ifc:IfcTimeSeriesDataTypeEnum" use="optional"/>
    <xs:attribute name="DataOrigin" type="ifc:IfcDataOriginEnum" use="optional"/>
    <xs:attribute name="UserDefinedDataOrigin" type="ifc:IfcLabel" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcTimeSeries
 ABSTRACT SUPERTYPE OF(ONEOF(IfcIrregularTimeSeries, IfcRegularTimeSeries));
  Name : IfcLabel;
  Description : OPTIONAL IfcText;
  StartTime : IfcDateTime;
  EndTime : IfcDateTime;
  TimeSeriesDataType : IfcTimeSeriesDataTypeEnum;
  DataOrigin : IfcDataOriginEnum;
  UserDefinedDataOrigin : OPTIONAL IfcLabel;
  Unit : OPTIONAL IfcUnit;
 INVERSE
  HasExternalReference : SET [1:?] OF IfcExternalReferenceRelationship FOR RelatedResourceObjects;
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

References  References: IfcMetricValueSelect IfcResourceObjectSelect IfcObjectReferenceSelect

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