基于ArcGIS的公路图形数据坐标转换研究

Research on Coordinate Transformation of HighwayGraphical Data Based on ArcGIS

由于控制投影变形的需要,公路勘测设计中的平面坐标系采用任意带任意投影面的工程独立坐标系统,线状的公路数据往往分属于若干个独立坐标系。为了便于研究分析整条线路,需要将不同坐标系的数据统一到同一坐标系下。目前大多数坐标转换软件(工具)支持的是点坐标转换,而支持图形数据转换的比较少,本文基于ArcGIS提出一种简单可行的方法,实现公路图形数据在不同工程独立坐标系之间的转换。

Due to the need of controlling the projection deformation,the plane coordinate system of highway survey and design adopts the project independent coordinate system with arbitrary projection,and the linear highway data often belongs to several independent coordinate systems.In order to study and analyze the whole line,it is necessary to unify the data of different coordinate systems to the same coordinate system.At present,most coordinate conversion software(tools)support point coordinate conversion,but few support graphical data conversion.This paper proposes a simple and feasible method based on ArcGIS to realize the conversion of highway graphical data in different project independent coordinate systems.