南方CASS到MapGIS数据格式无缝自动转换的实现

Seamless Automatic Implementation of Conversion Geology Data from CASS to MapGIS

长期以来,测绘部门使用的数字测图软件南方CASS与行业应用部门使用MapGIS数据软件的数据格式交换存在很大的障碍,这给地质、国土等很多部门用户的工作带来诸多不便。本文从实际应用的角度出发,深入探讨了两者的数据格式特点,编写了读取转换数据代码,将CASS图中实体类型读出为点、线、面、文字、块,然后分别转换为MapGIS中的点、线、面、文字、子图。实现了两种数据的无缝自动转换,最大限度地减少了转换过程中的数据丢失,最后在内蒙古包头哈不沁铁矿地形图的转换实践得以检验。

The geological department always works with MAPGIS software,but the workers of digital surveying and mapping are using CASS software,the data formats are absolutely different.So a lot of obstacles exist in data exchanging between the two popular software for a long time which brings a lot of inconvenience to the geology,land and many other sectors of users＇ work.From the point of practical application,this article has conducted a further discussion in the format of the data characteristics and conversion method between CASS and MapGIS.By writing program code to read CASS data,the CASS diagram entity type was subdivided into point,line,surface,text,and block.Then the data which has been read out were converted to MapGIS format data which concludes dot,line,face,text,and sub graph through the restructure MapGIS data program code.At last,we realized the automatic conversion of the two data format and also reduced the data loss to the process of conversion at the ultimate in the paper through the conversion practice of the Inner Mongolia Baotou Habuqin iron mine topographic map.