GB/T 37270.2-2018 in English
VALIDVector map of marine fundamental geographic feature--Part 2: Symbol database design
- Issued on:2018-12-28
- Implemented on:2019-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$214.00
| Standard No: | GB/T 37270.2-2018 |
| Document status: | VALID |
| Title in English: | Vector map of marine fundamental geographic feature--Part 2: Symbol database design |
| Title in Chinese: | 海洋基础地理要素矢量地图 第2部分:符号库设计 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2018-12-28 |
| Implemented on: | 2019-07-01 |
| Chinese Classification: | A14-Library, Archives, Literature and Information |
| Professional Classification: | GB-National Standard |
| Related Topics: | map
Basic Ocean Geography GB/T 37270.2 GB/T 37270.2-2018 |
《GB/T 37270.2-2018海洋基础地理要素矢量地图 第2部分:符号库设计》由TC283（全国海洋标准化技术委员会）归口，主管部门为自然资源部(海洋)。
Introduction
Interpretation of the National Standard of the People's Republic of China GB/T 37270.2—2018
This standard specifies in detail the principles, classification coding and structural design of the vector symbol library of marine basic geographic elements, and is applicable to the construction and management of the symbol library in the electronic base map of the marine geographic information system.
1. Background of Standard Formulation
With the rapid development of marine information technology, the demand for vectorization and informatization of marine basic geographic elements is becoming increasingly urgent. GB/T 37270.2—2018, as one of the series of standards for "Vector Maps of Marine Basic Geographic Elements", aims to standardize the design and management of marine geographic information symbol libraries and improve the level of data sharing and application.
2. Comparison of standard frameworks
| Standard dimensions | GB/T 37270.1 (Symbol design) | GB/T 37270.2 (Symbol library design) | GB/T 37270.3 (Symbol format exchange) |
|---|---|---|---|
| Core content | Symbol design principles and specifications | Symbol library structure and management | Symbol format conversion and interoperability |
| Scope of application | Single symbol design | Symbol set construction and management | Symbol data sharing and exchange |
| Technical Focus | Symbol Visual Expression | Symbol Database Design | Symbol Format Standardization |
3. Interpretation of Technical Specifications
3.1 Symbol Classification and Coding System
This standard adopts a hierarchical coding method, dividing symbols into major categories, medium categories, minor categories, subcategories and extended categories. For example:
- Point symbol: VM120305 (pebble beach)
- Line symbol: VL110300 (adjacent area boundary)
- Plane symbol: VF150600 (dumping area)
3.2 Database Design and Implementation
Based on relational database (such as Oracle, MySQL), the symbol library structure design includes:
- Symbol layer: stores symbol entity and attribute information
- Coding layer: manages classification code and type code
- View layer: provides common application views
3.3 Implementation Suggestions
Case study: Taking a certain area in the East China Sea as an example, a symbol library is established in combination with standard requirements:
- Symbol classification and encoding according to classification and coding rules
- Choose a suitable database platform (such as MySQL) for storage
- Quick access to commonly used symbols through the view layer
- Regularly update the symbol library to adapt to changes in business needs
3.4 Technology evolution analysis
In the future, with the development of intelligent and automated marine geographic information systems, symbol library design will move towards:
- Intelligent direction: Introduce AI technology to achieve automatic symbol classification and recommendation
- Three-dimensional extension: Support three-dimensional vector symbol representation
- Dynamic update: Enhance the real-time update capability of the symbol library
4. Summary
GB/T 37270.2-2018 provides comprehensive technical specifications for the design and management of the marine basic geographic element vector symbol library, which has important guiding significance. During the implementation process, it is recommended to combine actual business needs, flexibly apply the technical requirements in the standard, pay attention to the industry technology evolution trend, and continuously optimize the symbol library structure.
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 37270.1-2018 in English
Vector map of marine fundamental geographic feature--Part 1: Symbol design
2018-12-28
