摘要
随着GIS逐步融入IT主流,各类开源GIS软件不断涌现,其中Proj.4作为跨平台的开源地图投影库,已被众多的开源GIS软件所引用,并受到国内外相关研究人员的重视。文中介绍了Proj.4的坐标转换流程、坐标系定义方式、参数格式等,以我国不同时期坐标系为例,按照转换流程,详细说明并实现常用的空间坐标转换。
With GIS blended with the IT mainstream,various open GIS software has brought up.As a cross-platform map projection library of open GIS,Proj.4 has been used by many open GIS software and gained increasing emphasis.The paper firstly brings a brief introduction,including the flow chart of coordinate transformation based on Proj.4,various coordinate definitions,parameter formats and so on.Finally,we explicate and realize the spatial coordinate transformation in common use in detail,according to the flow,taking coordinate systems of our country in different periods for example.
出处
《测绘工程》
CSCD
2012年第2期29-31,38,共4页
Engineering of Surveying and Mapping
关键词
坐标系
空间基准
Proj.4
坐标转换
coordinate system
spatial reference
Proj.4
coordinate transformation
