This part of GB/T 20258 specifies the content structure and element description of the 1:5 000 and 1:10 000 basic geographic information element data dictionary. This part applies to the production, database construction, update and maintenance of 1:5 000 and 1:10 000 scale basic geographic information data. GB/T 20258.2-2006 Basic geographic information element data dictionary Part 2: 1:5000 1:10000 basic geographic information element data dictionary GB/T20258.2-2006 Standard download decompression password: www.bzxz.net
This part of GB/T 20258 specifies the content structure and element description of the 1:5 000 and 1:10 000 basic geographic information element data dictionary. This part applies to the production, database construction, update and maintenance of 1:5 000 and 1:10 000 scale basic geographic information data.

ICS 07.040
National Standard of the People's Republic of China
GB/T 20258.2--2006
Data dictionary for fundamental geographic information features-Part 2: 1: 5 0001: 10 000
Data dictionary for fundamental geographic information featuresof 1 : 5 0001 : 10 000 Scale2006-05-24 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration of China
2006-10-01 Implementation
2 Normative References
Terms and Definitions
4 Data Dictionary Structure and Contents
4.1 Structure
4.2 Element Name
4.3 Element Description
Main Classification Code
4.5 Attribute Table
4.6 Geometric Representation
4.7 Geometric Representation Examples
Cartographic Representation Examples
Related Elements
4. 10 Relationships
5 Feature data dictionary
Appendix A (Normative Appendix)
Feature classification code index
Chinese index
1:10000 Basic geographic information feature data dictionary 1:5 000
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GB/T 2025B.2—2006
GB/T 20258. 2 --- 2006
GB/T20258 "Basic Geographic Information Element Data Dictionary" is divided into four parts: - Part 1: 1: 5001: [0001: 2000 Basic Geographic Information Element Data Dictionary: - Part 2: 1: 50001: 10000 Basic Geographic Information Element Data Dictionary: - Part 3: 1: 250001: 500001: 100000 Basic Geographic Information Element Data Dictionary: Part 4: 1: 250 0001: 500 0001: [000 000 Basic Geographic Information Element Data Dictionary: This part is the second part of GB 20258.
This part is formulated based on the current needs of my country for 1: 50001; 10000 basic geographic information data collection, database construction, mapping and application.
Appendix A of this part is a normative appendix.
This part is proposed by the State Administration of Surveying, Mapping and Geoinformation.
This part is under the jurisdiction of the National Technical Committee for Geographic Information Standardization. The drafting unit of this part: Surveying and Mapping Standardization Institute of the State Administration of Surveying, Mapping and Geoinformation. The main authors of this standard: Duan Yihong, Lv Yudian, Li Jianli, Er Wei, Xiao Xuenian, Zhang Kun, Ma Xiaoping. Basic geographic information element data dictionary
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GB/T 20258.2—2006
Part 2: 1:50001:10000 Basic geographic information element data dictionary—Scope
This part of GR/T 20258 specifies the content structure and key case description of the 1:5 000 and 1:10 000 basic geographic information element data dictionary.
This part is applicable to the production, database construction, update and maintenance of basic geographic information data at a scale of 1:5000 and 1:10000. The analysis, application and mapping output of basic geographic information data at scales of 1:5000 and 1:10000 can be referred to for implementation. 2 Normative references
The clauses in the following documents become the clauses of this part through reference in this part of GB/T20258. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this part. However, the parties reaching an agreement based on this part are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version applies to this part. GB Jin 13923—2006 Classification and code of basic geographic information GB/T20257.2—2006 National basic scale map diagram Part 2 1:50001:10000 topographic map diagram 3 Terms and definitions
The following terms and antonyms apply to this part of GB/T20258. 3.1
Entity enlily
A phenomenon in the real world. It cannot be further subdivided into phenomena of the same type. 3.2
Feature
Abstract of a real-world phenomenon.
Note: A feature can appear as a type (such as Ningzhi) or as an instance (such as Dongting Lake). 3.3
Feature attribute
Qualitative and quantitative characteristics of a feature. [IS01901 Note 1: --A feature attribute may appear as a type or as an instance. When there is only one meaning, either the feature attribute type or the feature attribute instance is used.
Note 2: A feature attribute should have a name, a data type and a value domain associated with it. The feature attribute of a feature instance should have a property value obtained from the value domain.
Attribute valueattribute value
Assigns a specific value to an attribute.
point
zero-dimensional geometric element.
GB/T20258.2—2006
line
one-dimensional geometric element.
polygon
two-dimensional geometric element.
4 Data dictionary structure and content
4.1 Structure
The data dictionary structure is in the form of a table, and the content described includes the element name, element description, element classification code, element extension, geometric representation, and geometric table. The examples and cartographic representations show examples, related elements and relationships. 4.2 Key name
The formal name of the key. The key names in this section are consistent with GB/T13923-2006 "Classification and Code of Basic Geographic Information Elements". 4.3 Key description
Description of the form, function or characteristics of the element, used to distinguish or define the element. 4.4 Element classification code
The element classification code adopts GB/T13923-2006 "Classification and Code of Basic Geographic Information Elements". 4.5 Attribute table
Lists the relevant attribute items of the element, respectively from the attribute name , attribute description, data type and field requirements, attribute value range or examples, constraints/conditions, and remarks are described in detail. Note: The attributes listed in the attribute table are not complete, and users can expand them as needed. 4.5.1 Attribute name
The name of the feature attribute item.
4.5.2 Attribute description
Explanation of the attribute meaning. All calculations must be marked separately. 4.5.3 Data type and field requirements
Specify the data type and field requirements of the attribute item. Data types are divided into character type, integer type, long integer type, floating point type, date type, etc. Note: Character and integer types are The field byte width is described by a natural number: the field width of floating-point data should be expressed as a small integer, where the integer part represents the number of digits of the integer part of the floating-point number, and the decimal part represents the number of digits of the decimal part of the floating-point number. For example, 15.2 means that the integer part of the floating-point number is 5 digits, and the decimal part is 2 digits. 4.5.4 Attribute value range or example
The attribute value range is the range of possible values ​​of the attribute item. If the values ​​of the attribute item can be listed in a simple enumeration, list all its values ​​and separate them with "": if they cannot be listed in a simple enumeration, list typical examples and put the example values ​​in "". 4.5.5 Constraints/conditions
The attribute item is now defined as a mandatory attribute or a conditional optional attribute of the feature. When the attribute item is a mandatory attribute of the feature, it is indicated by the letter "M": when it is conditionally optional, it is indicated by the letter "C". 4.5.6 Remarks
The content that is specially explained.
4.6 Geometric representation
Describe the geometric characteristics of the element, graphic code, representation method and associated attributes. 4.6.1 Geometric characteristics
The elements are divided into four types according to their geometric characteristics: point elements, line elements, and surface elements. Point elements are used to represent geographical elements without area or length, or elements represented by points at a certain map scale. 2
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GB/T 20258.2-2006
Line elements are used to represent geographic elements with a certain length but no area, or elements represented by lines at a certain map scale.
Surface elements are used to represent geographic elements with a certain length and area, or elements represented by surfaces at a certain map scale. Composite elements are composed of point elements, line elements, surface elements and auxiliary cartographic elements. Auxiliary cartographic elements refer to auxiliary points, lines and surfaces added to ensure the correctness of map symbolization. Elements can have one or more geometric representations according to their geographic scale. For example, rivers can be represented by line elements or surface elements according to specific conditions.
4.6.2 Graphic Codes
Mathematics 1, 2, 3 and 4 are used as the graphic codes for point elements, line elements, surface elements and auxiliary cartographic elements respectively. Users can also determine them according to actual needs.
4.6.3 Representation method
4.6.3.1 Representation method of point elements
There are three forms of representation of point elements: marked point, positioning point, and directed point. Marked point refers to the form of expression of point elements without corresponding entities, such as elevation point, relative height point, special elevation point, water depth point, etc. Positioning point refers to the form of expression of point elements with corresponding entities, such as lighthouse, smoke tower, etc. Directed point refers to the form of expression of point elements with directionality, such as spring, milestone, etc. The "direction" attribute item should be defined in the attribute table. 4.6.3.2 Representation method of line elements
There are three forms of representation of line elements: line, centerline, and directed line. Line refers to the form of expression of line elements without corresponding entities, such as contour line, land class boundary, boundary line, etc. Centerline refers to the form of expression of line elements with corresponding entities, such as subway, mechanized farming road, cable bridge, tunnel, etc. Directed refers to the presentation form of directional line elements: lines that require collection in a certain direction, such as single lines, embankments/cuts/ditches/embankments, boundaries of natural and cultural protection areas, etc. 4.6.3.3 Methods of representing surface elements
Surface elements can be represented in two forms, contour surface and range surface. Contour surface is used to represent surface elements with clear boundaries, such as a single house represented according to scale. Range line surface is used to represent surface elements without clear boundaries, such as oil groups. 4.6.3.4 Methods of representing composite elements
Combinations of points, lines, surfaces or points, lines and surfaces for auxiliary mapping. 4.6.4 Attributes
Attributes that elements need to be associated with.
4.7 Geometric Representation Examples
Give examples of the geometric relationship between this element or technical key and other related elements, where "+" represents a marked point, "+→" represents a directed point, and "→" represents a directed line; this element is represented in red, and related elements are represented in black. 4.8 Cartographic Representation Examples
Give examples of cartographic representation of this element or this element and other related elements. Cartographic representation is based on GH/1202572-2006 National Basic Scale Map Diagram Part 2 1:50001:10000 Topographic Map Diagram". 4.9 Related Elements
Give possible topological related elements of this element. Note: Due to the complexity of the real world and the limitations of the data model in expressing the real world, the listed related elements may not be all of its related elements. Users can supplement the related elements and their relationships according to specific circumstances. 3
GB/T 20258.2—2000
4.10 Relationship
Describe the topological spatial relationship between this element and related elements. Topological spatial relationship types include connection, overlap, containment, separation, and intersection. This section only describes the connection, overlap, and containment relationships that require data processing.
4.10.1 Connection
When this element and related elements intersect only at the boundary, it is called a connection relationship. Connection relationships include:
a) a point is at the endpoint of a line, a point is on the edge of a surface; b) lines and lines have a common node, one or two endpoints of a line are on the line of a surface, a line is on the edge of a surface, etc.; ) rain and the surface have a common node or a common edge. Various examples of connection relationships are shown in Table 1.
Key case
Oma eerO
No connection relationship
4. 10. 2 When this element partially overlaps with the related element, it is called an overlapping relationship. The overlapping relationship includes: a) Line and line overlap: b) Surface and surface overlap. Various examples of overlapping relationships are shown in Table 2. No sub-overlapping relationship No overlapping relationship No overlapping relationship No overlapping relationship Related elements No overlapping vertical relationship HKANKAca-GRT20258.22006 Especially overlapping relationship
GB/T20258.2—2006
4.10.3 Containment
When this element is included or contained in the relevant case, it is called a containment relationship. Containment relationships include:
a) a point is on a line but not the end point of the line, and the point is inside the surface; b) a line is part of another line, and the line is inside the surface; c) a surface is completely inside another surface or is part of another surface. Various examples of containment relationships are shown in Table 3.
No containment relationship
4.10.4 Examples
Table 4 gives examples of various relationships.
Start and end point of route
and highway
toll station and toll
boundary, boundary research and administrative area
water depth point and lake
5 Element data dictionary description
For detailed descriptions of each element data dictionary, see Appendix A. Line
Rivers, roads
Highways and roads
Roads and bridges
Rivers and reservoirs
Bath contours and water or
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GB/F 20258. 2 — 2006
Administrative regions at the same level
Historic sites, sites and vegetation
National administrative regions include food at all levels
Administrative regions, dry beaches and sea areas
GB/T20258.2—2006
Element name
Element description
Earth origin
Appendix US
(Normative Appendix?
1:50001:10000 Basic geographic information element data dictionary National horizontal control network, that is, the starting point of the 1980 Xi'an coordinate system. Element classification code
Attribute table
Question name
Geometry table
Geometric features
110101
Abstract speed
Main classification code and seventh digit
Graphic code
Graphic code
Geometric representation example
Related elements
Data type
Stage requirements
Long integer 10
Representation method
Location point
Reading area or
1101011
Constraints/conditions
Constraint rate representation example
Element name
Triangulation point
Element description
Use Plane control points determined by triangulation. Feature classification code 110102
Attribute table
Property name
Coordinate system
Geometric latitude
Geometric longitude
Elevation base
Geometric representation
Geometric features
Property description
Required classification code and 17-digit
Graphic code
Name of triangulation point
Level of triangulation point
Coordinate system of corner point
Geometric latitude of triangulation point (°)
Geometric longitude of corner point (°)
Elevation of triangulation point (m)
Corner elevation
Graphic code
Geometric representation example
Related elements
Representation methodbzxZ.net
Location point
Data type
Field requirements
Long blue type 10
Heng character type 60
Character type 1
Character type 30
Floating point type 4.8
Floating point type 4.R
Floating point type 4.2
Character type 30
Character value or example
1101021
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GB/T 20258.2—2006
Constraints/
First/Second/Third/Fourth/5\
Code, point name, grade, coordinate scheme, latitude of people and land, longitude of people and land, elevation, departure benchmark
Example of cartographic installation
Zhang Wanling
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