基于WalkScript的坐标转换技术——以地方坐标系为例

Coordinate Transformation Technology Based on WalkScript:Take the Local Coordinate System as an Example

2018年国土资源部对2000国家大地坐标系转换工作提出要求,浙江省全面开展了国土资源部门的2000国家大地坐标系转换工作。国土数据中大量的存量数据是地方坐标系,数据是以WALK格式存储,该软件环境下没有符合各地方坐标系的转换工具。本文针对浙江省某县市WALK格式的国土资源空间数据坐标转换需求,研究和制定了转换技术路线,并利用WalkScript脚本语言进行了程序开发和实现,既满足了地方转换参数的保密性要求,又保障了2000国家大地坐标系转换工作的顺利开展。

In 2018,the Ministry of Land and Resources put forward requirements for the transformation of CGCS2000 and Zhejiang Province has carried out the conversion work by the Ministry of Land and Resources.A large number of inventory data in land data is local coordinate system,which is stored in walk format.There is no conversion tool in accordance with local coordinate system under the software environment.To deal with the coordinate transformation requirements for the land and resources spatial data of a city in Zhejiang Province,this paper studies and formulates the transformation technical route,develops and implements the program by using WalkScript language,which not only meets the confidentiality of local conversion parameters,but also ensures the smooth development of the CGCS2000 transformation work.