实例介绍
【实例简介】地理信息的 OpenGIS 实施规范 - 简单要素访问 - 第 1 部分 通用架构
OpenGIS Implementation Specification for Geographic information - Simple feature access - Part1 Common architecture
【实例截图】
【核心代码】
Contents
Page
Foreword ............................................................................................................................................................. 5
Introduction ......................................................................................................................................................... 6
1
Scope ...................................................................................................................................................... 7
2
Conformance.......................................................................................................................................... 7
3
Normative references ............................................................................................................................ 7
4
Terms and definitions ........................................................................................................................... 8
5
Symbols and Abbreviations ............................................................................................................... 12
5.1
Abbreviations ....................................................................................................................................... 12
5.2
Symbols ................................................................................................................................................ 12
6
Architecture.......................................................................................................................................... 13
6.1
Geometry object model ....................................................................................................................... 13
6.2
Annotation Text ................................................................................................................................... 40
7
Well-known Text Representation for Geometry ............................................................................... 51
7.1
Component overview .......................................................................................................................... 51
7.2
Component description ...................................................................................................................... 52
8
Well-known Binary Representation for Geometry ........................................................................... 62
8.1
Component overview .......................................................................................................................... 62
8.2
Component description ...................................................................................................................... 62
9
Well-known Text Representation of Spatial Reference Systems ................................................... 73
9.1
Component overview .......................................................................................................................... 73
9.2
Component description ...................................................................................................................... 73
Annex A (informative) The correspondence of concepts of the common architecture with concepts
of the geometry model of ISO 19107 ................................................................................................. 76
Annex B (informative) Supported spatial reference data ............................................................................ 86
Bibliography ...................................................................................................................................................... 924
Copyright © 2010 Open Geospatial Consortium, Inc.
Figures
Figure 1: Geometry class hierarchy ......................................................................................................................... 14
Figure 2: Geometry class operations ....................................................................................................................... 15
Figure 3: Geometry collection operations ................................................................................................................ 20
Figure 4: Point .......................................................................................................................................................... 21
Figure 5: Curve ........................................................................................................................................................ 22
Figure 6: Examples of LineStrings ........................................................................................................................... 23
Figure 7: LineString.................................................................................................................................................. 23
Figure 8: MultiCurve................................................................................................................................................. 24
Figure 9: Examples of MultiLineStrings ................................................................................................................... 25
Figure 10: Surface ................................................................................................................................................... 26
Figure 11: Examples of Polygons ............................................................................................................................ 27
Figure 12: Examples of objects not representable as a single instance of Polygon ............................................... 28
Figure 13: Polygon ................................................................................................................................................... 28
Figure 14: Polyhedral Surface with consistent orientation ....................................................................................... 29
Figure 15: Polyhedral Surface ................................................................................................................................. 30
Figure 16: MultiSurface operations .......................................................................................................................... 31
Figure 17: Examples of MultiPolygons .................................................................................................................... 32
Figure 18: Geometric objects not representable as a single instance of a MultiPolygon ........................................ 32
Figure 19: An example instance and its DE-9IM ..................................................................................................... 35
Figure 20: Examples of the Touches relationship ................................................................................................... 37
Figure 21: Examples of the Crosses relationship .................................................................................................... 38
Figure 22: Examples of the “Within” relationship ..................................................................................................... 38
Figure 23: Examples of the Overlaps relationship ................................................................................................... 39
Figure 24: Text classes ............................................................................................................................................ 42
Figure 25: Well-known Binary Representation for a geometric object .................................................................... 72
Figure A.1: The root type and subordinates of the Spatial schema ........................................................................ 77
Figure A.2: The GM_Object hierarchy ..................................................................................................................... 78
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