MySQL 5.1 リファレンスマニュアル :: 16 Spatial Extensions :: 16.2 The OpenGIS Geometry Model :: 16.2.3 Class Point
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- 16.2 The OpenGIS Geometry Model
- 16.2.1 The Geometry Class Hierarchy
- 16.2.2 Class Geometry
- 16.2.3 Class Point
- 16.2.4 Class Curve
- 16.2.5 Class LineString
- 16.2.6 Class Surface
- 16.2.7 Class Polygon
- 16.2.8 Class GeometryCollection
- 16.2.9 Class MultiPoint
- 16.2.10 Class MultiCurve
- 16.2.11 Class MultiLineString
- 16.2.12 Class MultiSurface
- 16.2.13 Class MultiPolygon
A Point is a geometry that represents a
single location in coordinate space.
Point
Examples
Imagine a large-scale map of the world with many cities. A
Pointobject could represent each city.On a city map, a
Pointobject could represent a bus stop.
Point
Properties
X-coordinate value.
Y-coordinate value.
Pointis defined as a zero-dimensional geometry.The boundary of a
Pointis the empty set.
