基于VB.NET的地形图编号查询与面积计算程序

摘要

This essay introduces the systerm of the inquiry of the sheet numbers of topographic maps and area calculation based on VB. NET. Through this systerm, according to latitude and longitude coordinates, you can query the map sheet numbers in different basic scales,the latitude and longitude coordinates of southwest point of the map, and the map sheet area in different coordinate systems.%主要介绍利用Microsoft Visual Basic.NET编写的地形图分幅编号查询与面积计算程序。通过该程序,根据经纬度坐标或高斯坐标,可查询该点所在各种基本比例尺下的图幅编号、西南图廓点的经纬度坐标以及在不同坐标系下的图幅面积。