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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
« 16.2.2 Class Geometry

16.2.4 Class Curve »
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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

16.2.3. Class Point

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 Point object could represent each city.

  • On a city map, a Point object could represent a bus stop.

Point Properties

  • X-coordinate value.

  • Y-coordinate value.

  • Point is defined as a zero-dimensional geometry.

  • The boundary of a Point is the empty set.

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