高程异常数据库的建立与自动查询方法

Database establishment of elevation anomaly and its automatic query method

应用ArcGIS实现高程异常等值线图的数字化和属性入库,建立高程异常数据库;在对距离加权、最小二乘插值、梯度插值3种数学方法对比分析的基础上,在面向对象的Visual Basic 6.0环境下应用MapObjects地理信息控件,实现高程异常值的自动查询及显示、缩放、漫游等相关功能。

Digital and attribute database of elevation anomaly isoline map with ArcGIS is realized, and elevation anomaly database is established. Based on contrast and analysis of three mathematical methods of distance weighted, least squares interpolation, gradient interpolation in object-oriented Visual Basic 6.0 application environment, using MapObjects geographic information controls, the related function of elevation anomaly, including automatic query and display, zoom and roam is realized.