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GB/T 35634-2017 English PDF

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GB/T 35634-2017: Tile data specification of electronic map for public service
Status: Valid
Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
GB/T 35634-2017359 Add to Cart 4 days Tile data specification of electronic map for public service Valid

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Basic data

Standard ID: GB/T 35634-2017 (GB/T35634-2017)
Description (Translated English): Tile data specification of electronic map for public service
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A75
Classification of International Standard: 07.040
Word Count Estimation: 18,124
Date of Issue: 2017-12-29
Date of Implementation: 2018-07-01
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 35634-2017: Tile data specification of electronic map for public service

---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.
Tile data specification of electronic map for public service ICS 07.040 A75 National Standards of People's Republic of China Public Service Electronic Map Tile Data Specification Published on.2017-12-29 2018-07-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Administration released Directory Preface III 1 Scope 1 2 Terms and Definitions 1 3 Basic regulations 1 3.1 Coordinate System 1 3.2 Specification 1 3.3 Format 1 4 Grade 1 5 Tile Data Organization 3 5.1 tile data file named 3 5.2 Data Organization 3 6 Content 3 7 Expression 3 Appendix A (informative annex) Vector map tile data elements and expression 4 Appendix B (informative annex) Image map tile data elements and expression 8 Reference 12

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by the National Bureau of Surveying and Mapping Geographic Information. This standard is under the jurisdiction of the National Geographic Information Standardization Technical Committee (SAC/TC230). This standard was drafted by. National Basic Geographic Information Center, Heilongjiang Basic Geographic Information Center of the State Bureau of Surveying and Mapping Geographic Information, and Beijing Municipality Surveying and Mapping Design Institute, Shanxi Provincial Comprehensive Geographic Information Center, Tiantian Map Co., Ltd., Beijing Jiwei Digital Source Information Technology Co., Ltd., Wu Daji Austrian Information Technology Co., Ltd., Beijing Siweitu New Technology Co., Ltd. The main drafters of this standard. Huang Wei, Jiang Jie, Cha Zhuhua, Tang Dezhao, Zhang Hongping, Liu Lifen, Cui Hongbo, Liu Qingli, Wei Dong, Ma Xiuxiang, Xie Qiang, Wang Jun, Zhang Xianzhe, Wei Yanfeng, Tao Haichao. Public Service Electronic Map Tile Data Specification

1 Scope

This standard specifies the basic regulations, classification, organization, content and expression of the public service electronic map tile data. This standard is applicable to the production of two-dimensional vector and video electronic map tile data for public services provided by government or public organizations. exchange.

2 Terms and definitions

The following terms and definitions apply to this document. 2.1 Tile data tiledata According to a certain grid division rule, several picture units formed by dividing a map defining a geographic coverage area are formed. 2.2 Map load mapload The sum of lines, symbols, and annotated areas within the unit area on the map.

3 Basic regulations

3.1 coordinate system The coordinate system of the electronic map tile data adopts.2000 National Earth Coordinate System (CGCS2000). 3.2 Specifications The tile data specification is defined as follows. a) The tile data blocks start at 180° west longitude, 90° north latitude, and increase east to south. b) The tile data block size is 256 pixels x 256 pixels. 3.3 Format The tile data format uses PNG or JPG.

4 rating

Tile data is graded according to the display scale and ground resolution. The display scale calculation method is shown in formula (1) and formula (2). S=1. Gr×Sr 0.0254 (1) In the formula. S --- display scale; Gr --- ground resolution in meters per pixel (m/pixel); Sr --- screen resolution, the value is 96dpi;
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