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1、BRITISH STANDARD BS EN ISO 19125-1:2006 Incorporating Amendment No. 1 (renumbers BS ISO 19125-1:2004 as BS EN ISO 19125-1:2006) Geographic information Simple feature access Part 1: Common architecture The European Standard EN ISO 19125-1:2006 has the status of a British Standard ICS 35.240.70 ? Lice
2、nsed Copy: sheffieldun sheffieldun, na, Sat Nov 18 01:33:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 19125-1:2006 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 8 February 2005 BSI August 2006 ISBN 0 580 45413 4 National foreword
3、 This British Standard is the English language version of EN ISO 19125-1:2006. It is identical with ISO 19125-1:2004. The UK participation in its preparation was entrusted to Technical Committee IST/36, Geographic information. A list of organizations represented on this committee can be obtained on
4、request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises
5、 a front cover, an inside front cover, the ISO title page, pages ii to v, a blank page, pages 1 to 42, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. 16388August 2006
6、 Renumbers BS ISO 19125-1:2004 as BS EN ISO 19125-1:2006 DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 01:33:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 19125-1:2004(E) OSI 4002 INTERNATIONAL STANDARD ISO 19125-1 First edition 2004-08-01 Corrected version
7、 2004-11-01 Geographic information Simple feature access Part 1: Common architecture Information gographique Accs aux entits simples Partie 1: Architecture commune Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 01:33:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 4002 All irthgs erse.devr
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10、006, Uncontrolled Copy, (c) BSI iii ContentsPage Forewordiv Introduction .iv 1Scope1 2Conformance.1 3Normative references .1 4Terms and definitions.1 5Abbreviated terms.4 6Architecture.5 6.1Geometry object model5 6.2Well-known Text Representation for Geometry.21 6.3Well-known Binary Representation f
11、or Geometry.22 6.4Well-known Text Representation of Spatial Reference Systems.25 Annex A (informative) The correspondence of concepts of the common architecture with concepts of the geometry model of ISO 1910728 Annex B (informative) Supported spatial reference data .36 Bibliography .42 BS EN ISO 19
12、1251:2006 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 01:33:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International St
13、andards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also
14、 take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committee
15、s is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possib
16、ility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 19125-1 was prepared by Technical Committee ISO/TC 211, Geographic information/Geomatics from a base document supplied by the Ope
17、n GIS Consortium, Inc. ISO 19125 consists of the following parts, under the general title Geographic information Simple feature access: Part 1: Common architecture Part 2: SQL option This corrected version of ISO 19125-1:2004 incorporates the following corrections: a complete version of Figure 9, wh
18、ich was truncated in the original; removal from the Foreword of the reference to ISO 19125-3, which has now been deleted. BS EN ISO 19125-1:2006 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 01:33:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS-52191 O1:(4002E) I SO 4002 All irthgs ersedev
19、rv Introduction This part of ISO 19125 describes the common architecture for simple feature geometry. The simple feature geometry object model is Distributed Computing Platform neutral and uses UML notation. The base Geometry class has subclasses for Point, Curve, Surface and GeometryCollection. Eac
20、h geometric object is associated with a Spatial Reference System, which describes the coordinate space in which the geometric object is defined. The extended Geometry model has specialized 0, 1 and 2-dimensional collection classes named MultiPoint, MultiLineString and MultiPolygon for modelling geom
21、etries corresponding to collections of Points, LineStrings and Polygons, respectively. MultiCurve and MultiSurface are introduced as abstract superclasses that generalize the collection interfaces to handle Curves and Surfaces. The attributes, methods and assertions for each Geometry class are descr
22、ibed in Figure 1 in 6.1.1. In describing methods, this is used to refer to the receiver of the method (the object being messaged). The SFA COM function “signatures” may use a different notation from SFA SQL. COM notation is more familiar for COM programmers. However, UML notation is used throughout
23、this part of ISO 19125. There may also be methods used in this International Standard that differ from one part to another. Where this is the case, the differences are shown within the part. This part of ISO 19125 implements a profile of the spatial schema described in ISO 19107:2003, Geographic inf
24、ormation ? Spatial schema. Annex A provides a detailed mapping of the schema in this part of ISO 19125 with the schema described in ISO 19107:2003. BS EN ISO 191251:2006 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 01:33:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI blank 4002:152191 OSI S
25、B Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 01:33:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTENRATIONAL TSANDADR IS-52191 O1:(4002E) I SO 4002 All irthgs ersedevr 1 Geographic information Simple feature access Part 1: Common architecture 1 Scope This part of ISO 19125 establishes
26、a common architecture and defines terms to use within the architecture. This part of ISO 19125 does not attempt to standardize and does not depend upon any part of the mechanism by which Types are added and maintained, including the following: a) syntax and functionality provided for defining types;
27、 b) syntax and functionality provided for defining functions; c) physical storage of type instances in the database; d) specific terminology used to refer to User Defined Types, for example UDT. This part of ISO 19125 does standardize names and geometric definitions for Types for Geometry. This part
28、 of ISO 19125 does not place any requirements on how to define the Geometry Types in the internal schema nor does it place any requirements on when or how or who defines the Geometry Types. 2 Conformance In order to conform to this part of ISO 19125, an implementation shall satisfy the requirements
29、of one or more test suites specified in the other parts of ISO 19125. 3 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced d
30、ocument (including any amendments) applies. ISO 19107:2003, Geographic information ? Spatial schema ISO 19111:2003, Geographic information ? Spatial referencing by coordinates 4 Terms and definitions For the purposes of this document, the following terms and definitions apply. 4.1 boundary set that
31、represents the limit of an entity BS EN ISO 191251:2006 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 01:33:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 NOTEBoundary is most commonly used in the context of geometry, where the set is a collection of points or a collection of objects that
32、represent those points. In other arenas, the term is used metaphorically to describe the transition between an entity and the rest of its domain of discourse. ISO 19107 4.2 buffer geometric object (4.14) that contains all direct positions (4.7) whose distance from a specified geometric object is les
33、s than or equal to a given distance ISO 19107 4.3 coordinate one of a sequence of n-numbers designating the position of a point (4.17) in n-dimensional space NOTEIn a coordinate reference system, the numbers must be qualified by units. adapted from ISO 19111 4.4 coordinate dimension number of measur
34、ements or axes needed to describe a position in a coordinate system (4.6) ISO 19107 4.5 coordinate reference system coordinate system (4.6) that is related to the real world by a datum adapted from ISO 19111 4.6 coordinate system set of mathematical rules for specifying how coordinates (4.3) are to
35、be assigned to point (4.17) ISO 19111 4.7 curve 1-dimensional geometric primitive (4.15), representing the continuous image of a line NOTEThe boundary of a curve is the set of points at either end of the curve. If the curve is a cycle, the two ends are identical, and the curve (if topologically clos
36、ed) is considered to not have a boundary. The first point is called the start point, and the last is the end point. Connectivity of the curve is guaranteed by the “continuous image of a line” clause. A topological theorem states that a continuous image of a connected set is connected. ISO 19107 4.7
37、direct position position described by a single set of coordinates (4.3) within a coordinate reference system (4.5) ISO 19107 4.9 end point last point (4.17) of a curve (4.7) ISO 19107 BS EN ISO 19125-1:2006 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 01:33:36 GMT+00:00 2006, Uncontrolled
38、Copy, (c) BSI IS-52191 O1:(4002E) I SO 4002 All irthgs ersedevr 3 4.10 exterior difference between the universe and the closure NOTE The concept of exterior is applicable to both topological and geometric complexes. ISO 19107 4.11 feature abstraction of real world phenomena NOTE A feature may occur
39、as a type or an instance. Feature type or feature instance is used when only one is meant. adapted from ISO 19101 4.12 feature attribute characteristic of a feature (4.11) NOTE A feature attribute has a name, a data type, and a value domain associated to it. A feature attribute for a feature instanc
40、e also has an attribute value taken from the value domain. adapted from ISO 19101 4.13 geometric complex set of disjoint geometric primitives (4.15) where the boundary (4.1) of each geometric primitive can be represented as the union of other geometric primitives of smaller dimension within the same
41、 set NOTE The geometric primitives in the set are disjoint in the sense that no direct position is interior to more than one geometric primitive. The set is closed under boundary operations, meaning that for each element in the geometric complex, there is a collection (also a geometric complex) of g
42、eometric primitives that represents the boundary of that element. Recall that the boundary of a point (the only 0D primitive object type in geometry) is empty. Thus, if the largest dimension geometric primitive is a solid (3D), the composition of the boundary operator in this definition terminates a
43、fter at most 3 steps. It is also the case that the boundary of any object is a cycle. ISO 19107 4.14 geometric object spatial object representing a geometric set NOTE A geometric object consists of a geometric primitive, a collection of geometric primitives, or a geometric complex treated as a singl
44、e entity. A geometric object may be the spatial representation of an object such as a feature or a significant part of a feature. ISO 19107 4.15 geometric primitive geometric object (4.14) representing a single, connected, homogeneous element of space NOTE Geometric primitives are non-decomposed obj
45、ects that represent information about geometric configuration. They include points, curves, surfaces, and solids. ISO 19107 BS EN ISO 19125-1:2006 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 01:33:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 4.16 interior set of all direct positions (4
46、.7) that are on a geometric object (4.14) but which are not on its boundary (4.1) NOTEThe interior of a topological object is the homomorphic image of the interior of any of its geometric realizations. This is not included as a definition because it follows from a theorem of topology. ISO 19107 4.17
47、 point 0-dimensional geometric primitive (4.15), representing a position NOTEThe boundary of a point is the empty set. ISO 19107 4.18 simple feature feature (4.11) restricted to 2D geometry with linear interpolation between vertices, having both spatial and non spatial attributes 4.19 start point fi
48、rst point (4.17) of a curve (4.7) ISO 19107 4.20 surface 2-dimensional geometric primitive (4.15), locally representing a continuous image of a region of a plane NOTEThe boundary of a surface is the set of oriented, closed curves that delineate the limits of the surface. adapted from ISO 19107 5 Abb
49、reviated terms APIApplication Program Interface COMComponent Object Model CORBACommon Object Request Broker Architecture DCE Distributed Computing Environment DCOMDistributed Component Objected Model DE-9IMDimensionally Extended Nine-Intersection Model IEEEInstitute of Electrical and Electronics Engineers, Inc. NDRLittle Endian byte order encoding OLEObject Linking and Embedding RPCRemote Procedure Call SQLStructured Query Language BS EN