GB/T 20258.4-2019
ActiveData dictionary for fundamental geographic information features—Part 4：Scale of 1:250 000 1:500 000 1:1 000 000
基础地理信息要素数据字典 第4部分：1∶250 000 1∶500 000 1∶1 000 000 比例尺
Application Summary AI generated
This standard defines the data dictionary for fundamental geographic information features at scales of 1:250,000, 1:500,000, and 1:1,000,000. It is applied in the production, updating, and sharing of medium-to-small scale national base geographic datasets, ensuring consistent data structure and attribute definitions across surveying, mapping, and GIS applications.
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GB/T 17159-2009
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GB/T 14912-2005
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GB/T 6962-2005
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GB/T 19711-2005
Data model and data exchange format for navigable spatial database
GB/T 19710-2005
Geographic Information-Metadata
GB/Z 33451-2016
Geographic information—Spatial sampling and statistical inference
GB/Z 34429-2017
Geographic information—Imagery and gridded data
GB/Z 40524-2021
Spatialized integration model of thematic information
Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.