Oracle 5.0 Reference Manual page 1000

• The boundary of a
12.16.2.4. Class
Curve
A is a one-dimensional geometry, usually represented by a sequence of points. Particular
Curve
subclasses of
Properties
Curve
• A
Curve
• A
Curve
• A
Curve
• A
Curve
• The boundary of a closed
• The boundary of a nonclosed
• A
Curve
12.16.2.5. Class
LineString
A
LineString
LineString
• On a world map,
• In a city map,
LineString
• A
LineString
• A
LineString
• A
LineString
12.16.2.6. Class
Surface
A
Surface
Polygon.
Properties
Surface
• A
Surface
• The OpenGIS specification defines a simple
that is associated with a single exterior boundary and zero or more interior boundaries.
• The boundary of a simple
interior boundaries.
12.16.2.7. Class
Polygon
A
Polygon
boundary and zero or more interior boundaries, where each interior boundary defines a hole in the
Polygon.
The OpenGIS Geometry Model
is the empty set.
Point
define the type of interpolation between points.
Curve
has the coordinates of its points.
is defined as a one-dimensional geometry.
is simple if it does not pass through the same point twice.
is closed if its start point is equal to its endpoint.
Curve
Curve
that is simple and closed is a LinearRing.
is a with linear interpolation between points.
Curve
Examples
objects could represent rivers.
LineString
objects could represent streets.
LineString
Properties
has coordinates of segments, defined by each consecutive pair of points.
is a if it consists of exactly two points.
Line
is a
LinearRing
is a two-dimensional geometry. It is a noninstantiable class. Its only instantiable subclass is
is defined as a two-dimensional geometry.
Surface
is a planar representing a multisided geometry. It is defined by a single exterior
Surface
is empty.
consists of its two endpoints.
if it is both closed and simple.
as a geometry that consists of a single "patch"
Surface
is the set of closed curves corresponding to its exterior and
980
is a noninstantiable class.
Curve