基于MapObjects的帽儿山电子地形图查询系统

本系统应用2004年1:50000帽儿山地形图为数据来源。首先对数据进行处理,将地形图分别扫描,应用ERDAS对地形图进行裁切、校正与拼接处理;运用R2V对等高线图层进行矢量化,生成Shape文件;在ArcView中将合并后的地形图打开,以其为参照,新建各图层,将地物矢量化成Shape文件。应用Visual Basic语言添加MapObjects控件进行系统开发,页面设计,添加各Shape文件,并编程实现电子地形图的基本功能,如放大、缩小、移动、全屏显示、比例尺及坐标显示、鹰眼、标注、查询属性和打印等功能,方便用户操作。

Query System of Maoershan Electronic Topographic Map Based on MapObjects

The system applied in 2004 1: 50000 mountain topographic map data sources The topographic map of 1: 500,000 in Maoershan of 2004 were used as the data sources in this system.First,topographical maps were scanned,and then ERDAS software were used to process the map(cutting,Correction,stitching);R2V was used to change the contour lines to vector layers(in the form of shape file);the merged terrain map was opened in ArcView,and it was used as a reference for vector.Using Visual Basic language which added MapObjects widgets carry thrugh systems development,page design,adding all sorts of shape papers,and come true the basic functions of electronic relief map,such as amplification,reduction,moving,full screen display,the scale and coordinates display,Hawkeye,tagging,attributes inquiry and printing functions,and so on.these function will give convenience to the operation by users.