面向新型测绘的时空数据属性连接及扩展方法研究

属性连接是整合集成新型测绘多源属性数据、扩展丰富实体信息、促进知识挖掘服务的重要操作和手段.在界定总结连接概念及类型的基础上,本文通过分析,明确了ArcMap现有属性连接工具在连接谓词、连接类型、连接基数等方面的局限.针对这些局限,选用目前流行的AO Addin技术,设计实现了一个属性连接扩展工具条插件——eJoin,...

Study on attribute joining and extension approach between spatio-temporal data for new surveying and mapping

Attribute joining is an important operation and method to integrate multi-source attribute data from new surveying and mapping, enrich entity information and promote knowledge mining and service. The limitations of ArcMap in join predicate, join type, join cardinality and other aspects are analyzed and explained base on the summary of the concept and type of join. Aiming to these limitations, the popular AO addin technology at present is chosen to design and implement an extended attribute join toolbar, named eJoin. Its interface component elements and function implementation strategies are discussed in detail. Many experiments for testing it have been done using various datasets. The results show that the extended toolbar can efficiently carry out many kinds of join operation between data tables such as general join, self join, m∶n join, projection join, etc., and supplies more practical, convenient, flexible tool supports for attribute joining between spatio-temporal data from new surveying and mapping.