基于Qt的空间数据存储格式检查软件的设计与实现

Design and Implementation of Geo Package Format Checking Software

面对日益增长的空间数据,网络环境较差的地图、地理信息应用服务系统面临着存储容量有限、地理空间数据格式不开放的挑战。而现有的许多地理空间数据存储依赖于平台,还需要克服跨平台带来的问题,亟需研究设计统一的数据存储标准来解决空间数据格式不一致、不同GIS平台数据转换过程复杂等问题。考虑到不同系统GIS平台、GIS应用程序间数据格式的差异,本研究基于Geo Package(GPKG)数据容器存储标准,采用Qt 5.2.0+VS2010开发平台,C++编程语言,通过三层架构编程模式研发了GIS数据存储格式的检查软件,以解决数据格式不统一的问题。该软件利用批量数据库查询,快速地实现了核心功能项、可选功能项、注册扩展功能三大类等超过百项功能文件格式的检查,并输出详细的检查结果,为GIS数据格式存储标准化提供支持和帮助,可有效解决不同GIS平台、不同GIS应用程序数据共享时面临的格式不一致问题,简化了数据转换的步骤。

Modem society is in an era of information explosion, and digital information is growing at an unprecedented rate. Under poor network environment, geographic information application service system is faced with limited storage capacity. In addition, considering that geospatial data are stored in a variety of computer platforms, it is urgent to study and design a unified data storage standard to solve the inconsistency of spatial data format among the different GIS platforms. Therefore, this study is based on the GeoPackage （GPKG） data container storage standards and Qt5.2.0＋VS2010. GeoPaekage format checking software was designed to check the format of GeoPackage files, which provides help and support to the standardization of GIS data format. Specifically, the software quickly realized the core functions, optional features and registration optional tunetions, and can be able to output details of the inspection results, which could effectively solve the problem of inconsistent data format among the different GIS platform and GIS application and simplify the steps of data conversion.