T/CTSA 0020-2023 Archaeological spatial element classification, schema, and encoding

Scope

Scope: This document specifies the classification scheme and coding for archaeological spatial elements. This document is applicable to the mapping, compilation, and production of digital maps of archaeological spatial elements at scales of 1:500,000, 1:100,000, and 1:10,000, as well as the organization, database construction, storage, exchange, and related GIS development of archaeological spatial element data. Main technical content: Classification of archaeological spatial elements. It specifies the methodology for classifying archaeological spatial elements, the definitions and code tables for major categories of archaeological spatial elements, and the definitions and code tables for minor categories of archaeological spatial elements. Using a linear classification method, archaeological spatial elements are divided into seven major categories: ancient ruins, ancient tombs, ancient buildings, grottoes and stone carvings, important modern and contemporary historical sites and representative buildings, and others, according to the detailed application of each category of elements. A total of 34 minor categories are defined. Archaeological spatial element schematics. A schematic symbol table for archaeological spatial elements is compiled, which follows the principle of logical correspondence between major and minor categories. The outer frame symbols of minor categories are exactly the same as those of the major categories to which they belong, making it easy to read. The schematic size, position, and orientation settings required when using this schematic system, as well as the rules for handling general and special situations when displaying schematics, are also specified. Archaeological spatial element coding. A coding method for archaeological spatial elements is proposed, which is composed of category domain coding, time domain coding, and spatial domain coding in turn. Category domain coding uses a three-digit decimal fixed-length number coding specifie

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