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20252453-T-424 项目
Cover
Contents
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions, and abbreviated terms
4 Fundamental concepts and assumptions
5 Core data schemas
6 Shared element data schemas
7 Domain specific data schemas
8 Resource definition data schemas
A Computer interpretable listings
B Alphabetical listings
C Inheritance listings
D Diagrams
E Examples
F Change logs
Bibliography
Index
4.2.1 WKT 格式的坐标参考系统(Coordinate Reference System in WKT)
下图展示了应用此概念时使用的通用类和关系。
<a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCoordinateReferenceSystem.htm'>IfcCoordinateReferenceSystem</a>
IfcCoordinateReferenceSystem
CRSName
1. Name
[0:1]
2. Description
[0:1]
3. GeodeticDatum
[0:1]
HasCoordinateOperation
[0:1]
HasWKTDescription
WellKnownText
[0:1]
<a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcWellKnownText.htm'>IfcWellKnownText</a>
IfcWellKnownText
WKTLiteral
1. WellKnownText
[1:1]
2. CoordinateReferenceSystem
[1:1]
<a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCoordinateReferenceSystem.htm'>IfcCoordinateReferenceSystem</a>:WellKnownText1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcWellKnownText.htm'>IfcWellKnownText</a>:CoordinateReferenceSystem0
IfcLabel_0
IfcLabel
<a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCoordinateReferenceSystem.htm'>IfcCoordinateReferenceSystem</a>:Name1->IfcLabel_0:IfcLabel0
IfcWellKnownTextLiteral_0
IfcWellKnownTextLiteral
<a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcWellKnownText.htm'>IfcWellKnownText</a>:WellKnownText1->IfcWellKnownTextLiteral_0:IfcWellKnownTextLiteral0
constraint_0
='WKT'
IfcLabel_0->constraint_0
Figure 4.2.1.A
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