IfcTimeSeriesValue

BACnet MVD

#### IfcTimeSeriesValue

Natural language names

| Serie mit Zeitabständen - Wert
| Time Series Value
| Valeur de séries temporelles

Change log

Item | SPF | XML | Change | Description
--- | --- | --- | --- | ---
IFC2x3 to IFC4
IfcTimeSeriesValue |  |  | MOVED | Schema changed from IFCTIMESERIESRESOURCE to IFCDATETIMERESOURCE.

##### Semantic definitions at the entity

Entity definition

A time series value is a list of values that comprise the time series. At least one value must be supplied. Applications are expected to normalize values by applying the following three rules:

- All time (universal, local, daylight savings, and solar) is normalized against the ISO 8601 standard GMT/UTC (Universal Coordinated Time).
- Any rollover is handled by the application providing the data. Rollover occurs, for example, when the measurement device resets itself while measuring and the recording data do not include the data measured before the reset.
- The normalized data refer to the preceding time unit. The time series example shown in Figure 265 below contains four time points: Time "a" indicates the beginning of the time series and the associated datum has no relevance. Data at time points "b," "c" and "d" are associated with values 1, 2 and 3, respectively.

Figure 265 — Time series value

> HISTORY New entity in IFC2x2.

Attribute definitions

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---
1 | ListValues | IfcValue | L[1:?] | A list of time-series values. At least one value is required. |  | X

##### Inherited definitions from supertypes

Entity inheritance
Attribute inheritance

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---
IfcTimeSeriesValue
1 | ListValues | IfcValue | L[1:?] | A list of time-series values. At least one value is required. |  | X

##### Formal representations

XML Specification
`<xs:element name="IfcTimeSeriesValue" type="ifc:IfcTimeSeriesValue" substitutionGroup="ifc:Entity" nillable="true"/>
<xs:complexType name="IfcTimeSeriesValue">
<xs:complexContent>
<xs:extension base="ifc:Entity">
<xs:sequence>
<xs:element name="ListValues">
<xs:complexType>
<xs:group ref="ifc:IfcValue" maxOccurs="unbounded"/>
<xs:attribute ref="ifc:itemType" fixed="ifc:IfcValue"/>
<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 IfcTimeSeriesValue;
ListValues : LIST [1:?] OF IfcValue;
END_ENTITY;

EXPRESS-G diagram

`

References: IfcRegularTimeSeries

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