GB/T 45792-2025 English PDF

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GB/T 45792-2025: Thematic map - Compilation specification for geographic base map
Status: Valid

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GB/T 45792-2025	1179	Add to Cart	8 days	Thematic map - Compilation specification for geographic base map	Valid

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Basic data

Standard ID: GB/T 45792-2025 (GB/T45792-2025)
Description (Translated English): Thematic map - Compilation specification for geographic base map
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A75
Classification of International Standard: 07.040
Word Count Estimation: 58,582
Date of Issue: 2025-05-30
Date of Implementation: 2025-09-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 45792-2025: Thematic map - Compilation specification for geographic base map

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 07.040 CCSA75 National Standard of the People's Republic of China Specifications for the compilation of thematic maps and geographic base maps Released on 2025-05-30 2025-09-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Table of contents

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Basic Provisions 1 4.1 Geographic basemap type 1 4.2 Mathematical foundations 2 4.3 Mapping units and tiles 2 4.4 Current situation 2 4.5 Geographic basemaps for publicly published thematic maps 2 4.6 Quality Inspection 2 5 Data Source 2 5.1 Main data sources 2 5.2 Other data sources 5 6 Element Selection 5 6.1 Selection order 5 6.2 Geographic base map load 5 6.3 Select content 5 6.4 Selecting indicators 7 7 Element Representation 8 7.1 Schema 8 7.2 Neighborhood element processing 9 7.3 Element Relationship Processing 9 8 Verification Method 10 8.1 Technical Design Review 10 8.2 Quality Inspection 10 8.3 Map Review 10 Appendix A (Informative) Geographic Base Map Projection and Scale 11 A.1 Geographic basemap projection 11 A.2 Scale 11 Appendix B (Normative) Geographical base map diagram symbols 12 B.1 Symbol size 12 B.2 Symbol Color 12 B.3 Symbol Configuration 13 B.4 Schematic symbols 14 Appendix C (Normative) Geographical Base Map Name Notes 40 C.1 Annotation 40 C.2 Annotation font and size 41 C.3 Annotation Color 41 C.4 Annotation Configuration 42 C.5 Name Notation 42 References 50

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed by the Ministry of Natural Resources of the People's Republic of China. This document is under the jurisdiction of the National Technical Committee for Geographic Information Standardization (SAC/TC230). The drafting units of this document. Chinese Academy of Surveying and Mapping, China Cartographic Publishing House Co., Ltd., and the Institute of Surveying and Mapping Standardization of the Ministry of Natural Resources. The main drafters of this document are. Yin Hongmei, Huang Jie, Liu Jiping, Lu Zhongjin, Gao Wujun, Mao Xi, Yan Jingxin, Geng Xiaonan, An Zhenzhen, Liu Dongqin, Gong Jinping, Liu Xiangyi, and Wang Huanping. Specifications for the compilation of thematic maps and geographic base maps

1 Scope

This document specifies the basic rules, data sources, feature selection, feature representation, verification methods, etc. for the compilation of thematic geographic base maps. This document is applicable to the design and compilation of thematic map geographic base maps.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 16820-2009 Cartographic Terminology GB/T 19996 Quality Assessment of Public Edition Paper Maps GB/T 24356 Quality inspection and acceptance of surveying and mapping results GB/T 35633 General requirements for the representation of place names on public maps GB/T 35764 Requirements for the presentation of public map content

3 Terms and definitions

The terms and definitions defined in GB/T 16820-2009 and the following apply to this document. 3.1 seriesthematicmaps A set of maps with a unified design and compilation that focuses on representing a certain theme in natural or social phenomena. 3.2 A set of geographic basemaps used for the compilation of a series of thematic maps.

4 Basic Provisions

4.1 Geographic basemap types Based on the differences in the content and expression requirements of various thematic maps, geographic base maps are classified. Commonly used geographic base map types are shown in Table 1. Table 1 Commonly used geographic basemap types Basemap types indicate the main purpose of the content Comprehensive geographic basemap Relatively balanced representation of regional water systems, settlements, and transportation Elements such as access, boundaries, and terrain Used to compile data based on regional natural geographical environment and human geography Other related thematic maps The administrative geographic base map focuses on showing elements such as boundaries, administrative regions, and settlements. Used to compile population, economic and social development data closely related to political regions Related thematic maps ......

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