GIS域状图层可交换文件的C++编程转换─以ARC/INFO向MapInfo转换为例

Structure Depiction of GIS Interchangeable Files for Polygon Layers and Transform Programming —With an Example from ARC/INFO to MapInfo Formats

域状图是GIS处理或操作的基本对象之一，大量复杂的域状图层靠具备拓扑运算功能的GIS自动生成，编码严谨、标注完备，是单机和网络上数据分析可视化应用急需的信息源。为了信息共享，不同GIS平台之间， GIS与非GIS应用软件之间常进行可交换文件的格式转换。以ARC/INFO向MapInfo文件转换为例，通过简析它们相应的文件结构，简介了C++环境下的数据转换编程思路、流程、相关的数据结构和解决方法，为日常办公电子表格应用中的区域状图层或图件自动插入奠定了基础。

Polygon layers are basic objects in GIS process and manipulation. With automatic functions of some GIS for topological manipulating, in huge amount and complex formats they were created with strict and complete attributes. Now, they are badly needed in routine workload applications on desktop systems. To share this kind of information, it is inevitable for transform programming between GISs or between GIS and non-GIS. This article is aimed at the transforming of interchange files, with an example from ARC/INFO to MapInfo formats. File and data structures are depicted, issues consideration, flow chart methodology and main section for programming are listed, therefore it is consolidated the application of the polygon layers in routine workload on desktop systems like spreadsheet and other database visualization.