GB/T 20258.2-2019 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 20258.2-2019	RFQ	ASK	3 days	Data dictionary for fundamental geographic information features -- Part 2: Scale of 1∶5 000 1∶10 000	Valid
GB/T 20258.2-2006	RFQ	ASK	3 days	Data dictionary for fundamental geographic information features -- Part 2: Data dictionary for fundamental geographic information features of 1: 5000 1: 10000 scale	Obsolete

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Basic data

Standard ID: GB/T 20258.2-2019 (GB/T20258.2-2019)
Description (Translated English): Data dictionary for fundamental geographic information features -- Part 2: Scale of 1��5 000 1��10 000
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A75
Classification of International Standard: 07.040
Word Count Estimation: 466,461
Date of Issue: 2019-03-25
Date of Implementation: 2019-10-01
Older Standard (superseded by this standard): GB/T 20258.2-2006
Quoted Standard: GB/T 13923; GB/T 20257.2
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration
Summary: This standard specifies the content structure of the 1:5000, 1:10000 basic geographic information element data dictionary and the description of the elements. This standard is applicable to the production, construction, update and maintenance of basic geographic information databases with a scale of 1:5000 and 1:10000. 1:5000, 1:10000 scale basic geographic information data analysis application and mapping output can be implemented by reference.

GB/T 20258.2-2019: Data dictionary for fundamental geographic information features -- Part 2: Scale of 1∶5 000 1∶10 000

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(Basic Geographic Information Elements Data Dictionary - Part 2. 1.5 000 1.10 000 scale) ICS 07.040 A75 National Standards of People's Republic of China Replace GB/T 20258.2-2006 Basic geographic information element data dictionary Part 2. 1.5000 1.10000 scale Part 2.Scaleof1.5000 1.10000 Published on.2019-03-25 2019-10-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 data dictionary structure and content 2 4.1 Structure 2 4.2 Element Name 2 4.3 Element Description 2 4.4 Feature Classification Code 2 4.5 Feature Attribute Table 3 4.6 Feature Geometry 4 4.7 means example 5 4.8 Element Relationship 5 5 element data dictionary content 8 6 element data dictionary expansion principle 8 Appendix A (Normative Appendix) 1.5000 1.10000 Basic Geographic Information Elements Data Dictionary Content 9 Feature Classification Code Index 449 Chinese index 455

Foreword

GB/T 20258 "Basic Geographic Information Element Data Dictionary" is divided into four parts. --- Part 1. 1.500 1.1000 1.2000 scale; --- Part 2. 1.5000 1.10000 scale; --- Part 3. 1.25000 1.50000 1.100000 scale; --- Part 4. 1.250000 1.500000 1.1000000 scale. This part is the second part of GB/T 20258. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 20258.2-2006 "Basic Geographic Information Elements Data Dictionary Part 2. 1.5000 1.10000 Basic Geographic Information Element Data Dictionary. Compared with GB/T 20258.2-2006, the main technical changes in this part are as follows. --- Added the expression "relationship description" (see 4.8.2); ---All elements have added the "data source and data update date" attribute item, the feature geometry indicates that the attribute column in the table increases the data source And update date; --- The definition of the direction attribute item in the element attribute table is changed from the original "angle with the east direction (°)" to "the counterclockwise direction with the east direction" Angle of formation (°)"; --- Added Chapter 6 element data dictionary expansion principle; --- Added 20 elements. tower, tailings pond, construction area, open warehouse (material field), dedicated oxygen supply point, fitness and entertainment facilities, sun Buddha Platform, windbreak wall, village road, railway observation deck, service area, wildlife passage, heat spreader, helipad, territorial sea baseline, territorial waters The base point, the special administrative area boundary, the wind-proof sand-fixing stone square, the wind-proof sand-fixing grass square, and the bare land have expanded their classification codes, definitions, Attribute items and corresponding table contents; --- Change the data type and value range of all feature data sources from "character type 10" to "character type 60"; ---Modified Changzhou River-ground river, Changnian River-disappearing river section, seasonal river, canal, higher than ground canal, higher than ground branch channel, etc. Geometry and representation of the prime; --- Modified the description of hydrological stations, subways, expressways, special elevation points, islands, coastlines, churches, railway stations and other elements. This part is proposed by the Ministry of Natural Resources of the People's Republic of China This part is under the jurisdiction of the National Geographic Information Standardization Technical Committee (SAC/TC230). This section drafted by. National Surveying and Mapping Geographic Information Bureau Surveying and Mapping Standardization Institute, Wuhan University. The main drafters of this section. Duan Yihong, Lu Yuxia, Huang Wei, Liu Xiaoqiang, Zhang Ying, Wang Xiaohua, Wu Tong, Liu Haiyan, He Chaoying, Ying Shen, Meng Junjun. The previous versions of the standards replaced by this section are. ---GB/T 20258.2-2006. Basic geographic information element data dictionary Part 2. 1.5000 1.10000 scale

1 Scope

This part of GB/T 20258 specifies the content structure and elements of the 1.5000, 1.10000 basic geographic information element data dictionary. description of. This section applies to the production, construction, renewal and maintenance of the 1.5000, 1.10000 scale basic geographic information database. The analysis and application of the basic geographic information data of 1.5000 and 1.10000 scale can be referred to and executed.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 13923 basic geographic information element classification and code GB/T 20257.2 National Basic Scale Map Drawing Part 2. 1.5000 1.10000 Topographic Map

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Entity entity A phenomenon in the real world. Note. Entities cannot be subdivided into the same type of phenomenon. 3.2 Feature The abstraction of real world phenomena. Note. An element can appear as a type (such as a lake) or as an instance (such as Dongting Lake). [GB/T 17694-2009, definition B.179] 3.3 Feature attribute featureattribute The characteristics of the feature. Note 1. A feature attribute may appear as a type or an instance. When there is only one meaning, either use the feature attribute type or use the feature Attribute instance. Note 2. A feature attribute should have a name, a data type, and a range of values associated with it. The feature attribute of a feature instance should have a genus obtained from the value range Sex value. [GB/T 17694-2009, definition B.181] 3.4 Attribute value attributevalue Give a property-specific value. ......

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