GB/T 18317-2009Classification and code for thematic map information (English PDF)

Foreword

This standard replaces GB/T 18317-2001 "thematic map information classification and code." This standard compared with GB/T 18317-2001, the main changes are as follows:

a) increasing the normative references.

b) changed the original standard part of the structure, as well as to avoid the original standard relating to the class "geographical basis" and this standard "feature "Subclass conflict infrastructure, the" geographic base map content information "topic class Geomatics a subclass Classification and code directly references GB/T 13923 "fundamental geographic information features and classification codes" in the information classification and thematic map Code table is no longer reflected.

c) rich thematic information content, increasing the current information society is closely related topics such as environmental protection, biological resources, gas Designate content resources and irrigation facilities. This standard was proposed by the State Bureau of Surveying and Mapping. This standard by the National Standardization Technical Committee on Geographical Information (SAC/TC230) centralized. This standard was drafted. Chinese Academy of Surveying and Mapping, Institute of Geographic Sciences and Natural Resources Research, National Geomatics in Heart, the National Development and Reform Commission of Macroeconomic Research Institute, construction of an integrated Survey and Design Institute. The main drafters of this standard. Wang Hong, Su Shan dance, Liao grams, Wang Yingjie, Li Li, Zeng Lan, Wang Dan, Tian Juan. This standard was first published in 2001. Thematic map information classification and code

1 Scope

GB/T 18317-2009 is the Chinese national standard on classification and code for thematic map information, in the field of natural and applied sciences. The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up - which in practice is how most foreign buyers meet it. It was issued on 6 May 2009 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China, and has been in force since 1 October 2009. Classification: ICS 07.040, CCS A75. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This standard specifies the classification and codes of thematic map information. This standard applies to thematic map database construction and management, including thematic maps classification, coding and management.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 16820 Map of academic language

GB/T 13923 fundamental geographic information features and classification codes

3 Terms and Definitions

And the following terms and definitions GB/T 16820 apply to this standard established.

3.1 Focus represents a natural or social phenomena in one or a few elements, namely the concentrated expression of a certain subject matter maps.

3.2 Outstanding represents a natural or social phenomena in one or a few elements of the map information, including the thematic content elements, and additional representation Map description. 4 information classification, coding principles and methods