基于ArcGIS Engine的数据文件到Shapefile转换方法及其实现

The Method for Transformation from the Data File Based on ArcGIS Engine to the Shapefile

地理数据的多源性导致存储格式的多样性,使其难以在同一GIS平台下实现互操作与空间分析,这有碍于信息的共享。为此,以ArcGIS为基础平台,采用ArcGIS Engine组件进行集成二次开发,通过对数据文件进行访问和空间参考的定义、空间与属性信息的转换来实现Excel型数据文件至Shapefile型矢量文件的转换,以初步实现地理信息间的共享与操作,进而给出了直观的、可视化的数据管理与表达。用此方法实现了山西省宁武县煤炭资源的采矿权文件之转换,即Access→Excel→Shapefile文件。结果表明,其不仅体现出了针对初始文件的降维性、无损性以及可视性的转换表达,还可将记录信息重组(分解)为空间信息与属性信息,对于前者,矿权图层可与遥感影像叠合成图;后者(矿种、开采方式等)可与前者实现无缝链接,并可据以获取相应的开发利用现状信息,以便开展资源遥感监测。

The multisource geographical data may correspond to the diversity of storage formats and, as a result, the storage formats fail to carry out relevant interoperation and spatial analysis, which hinders the information sharing. The authors have hence developed a model for transformation from the Excel data file to Shapefile vector files by virtue of a secondary development based on the ArcGIS Engine modules, which include file access, defining the spatial reference, transformation of spatial and attribute information. As a more visualized expression, this data management method has preliminarily filled the gap between various geographical data and provided the sharing or operating. At the same time, the exploitation right file transformation from Access to Excel and then to Shapefile formats has realized, which is also a transformed expression with the nature of non -destruction, dimensional reduction and visuality in comparison with that of the original files. The essence of this method lies in resolving the information as the record format into the spatial and attribute format. The former format means the superposition of exploitation layer and corresponding remote sensing image, and seamless connection exists between the latter （like mineral species, mining pattern etc. ） and the former. On such a basis, the exploitation information of the present situation can be obtained, and the remote sensing monitoring of mineral resources can be carried out.