坐标转换后数据处理方法研究——以数字线划图为例

Research on Data Processing Method after Coordinate Transformation:A Case Study of DLG

针对参心坐标系向地心坐标系转换后数据处理方法存在的缺陷,本文以数字线划图(DLG)分幅数据为例,结合CMAP软件,提出了批量处理方法,完成数据的批量拼接、快速坐标转换以及转换后数据的编辑、裁切等工作,批量生产了满足图式规范要求的标准分幅DLG数据,同时能较好地解决批量DLG数据坐标转换后存在的问题。该方法有效地减少了生产中的重复性,提高了生产效率,并为以后分幅数据坐标转换批量生产奠定了良好的基础。

Considered the flaws of the data processing method which were from reference coordinate system to geocentric coordinate system transformation,in this paper,a new framing Digital Line Graphic（ DLG） image data as an example,the combination of CMAP software,batch processing method is proposed to complete the data of batch splicing,fast coordinate transformation,and the converted data editing,cutting,etc.,the mass production meet the norm of DLG data schema specification requirements,at the same time can well solve the problem of batch DLG data after coordinate transformation exists. This method is effective to reduce the production of repeatability,improve production efficiency,and lay the good foundation for mass production of framing data after coordinate transformation.