CAJ | 학술논문

为解决空间矢量数据更新前后数据之间的关联关系识别困难的问题，在基于要素更新的基础上，引入了变化过程库，提出了一种顾及要素变化过程的更新方法，对由更新引起的要素变化信息进行识别并存储，设计了变化信息库的数据结构并对要素变化信息的应用作了说明，并以某市地形图数据在数据更新系统中做了试验来验证所提出的方法。试验结果表明，改进后的更新方法更利于历史数据的回朔及地物生命周期的跟踪。
위해결공간시량수거경신전후수거지간적관련관계식별곤난적문제，재기우요소경신적기출상，인입료변화과정고，제출료일충고급요소변화과정적경신방법，대유경신인기적요소변화신식진행식별병존저，설계료변화신식고적수거결구병대요소변화신식적응용작료설명，병이모시지형도수거재수거경신계통중주료시험래험증소제출적방법。시험결과표명，개진후적경신방법경리우역사수거적회삭급지물생명주기적근종。
The expression of link information between updating data and history data is still a difficult is-sue so far .This paper proposes a way to identify and store the feature changing information caused by da-ta updating process based on the consideration of features'changing process .Besides, this paper designs the record structure of changing information and verifies the method by real data in a prototype system . The experiment results show that the improved method has better performance in the process of geometric history data backdating and recording of geographic object life cycle .