地震系统的核心技术及软硬件设备需提升安全防护能力,实现“自主可控”,在应用开源地理信息系统软件QGIS进行地震应急制图时,要解决地震数据符号库由ArcGIS平台向QGIS平台转换的问题。运用QGIS插件技术创建点符号转换插件,通过符号库输入、符号读取、符号属性转换、QGIS符号创建、符号库输出等步骤,实现点符号的转换。结果表明,QGIS插件技术能够实现跨平台的点符号转换,并且表现出转换效率和成功率高、制图效果强的特点。本次QGIS插件技术在点符号转换方面的应用也为线符号、面符号转换提供了参考。
Due to the need to improve the security and protection capabilities of the seismic system' score technology, hardware and software equipment, and achieve "independence and controllability", it is necessary to apply the open-source GIS software QGIS for earthquake emergency mapping, and there is a need to solve the problem of converting the symbol library of seismic data from ArcGIS to QGIS. This paper uses QGIS plugin technology to create a point symbol conversion plugin, achieving point symbol conversion through steps such as symbol library input, symbol reading, symbol attribute conversion, QGIS symbolcreation, and symbol library output. The results show that QGIS plug-in technology can realize cross-platform point symbol conversion with high conversion efficiency and success rate, and strong mapping effects. The application of QGIS plugin technology in point symbol conversion also provides a reference for line symbol and surface symbol conversion.
2023,44(3): 192-198 收稿日期:2022-11-21
DOI:10.3969/j.issn.1003-3246.2023.03.027
基金项目:地震应急青年重点任务:开源GIS地图符号转换插件研发(项目编号:CEAEDEM022)
作者简介:陈雅慧(1990-),女,硕士,工程师,主要从事地震应急制图和数据分析工作。E-mail:chenyahui@seis.ac.cn
参考文献:
陈长林. 开放式地图符号成像模型比较分析[J]. 海洋测绘,2018,38(4):71-74.
陈梦琳,陈泰生,吴明光,等. GIS平台点状地图符号共享方法探讨[J]. 测绘科学,2015,40(11):159-163.
廖嫣然,刘青峰. 面向共享的地图符号可用性指标构建研究[J]. 现代信息科技,2022,6(1):124-126.
陶陶,闾国年,张书亮,等. GIS地图符号共享研究进展与展望[J]. 中国图象图形学报,2007,12(8):1 326-1 332.
王本林,陈泰生,陈梦琳. MapGIS点状符号共享方法研究[J]. 滁州学院学报,2018,20(2):73-77.
王志强,刘伟,王学,等. 跨GIS平台空间数据符号化及快速制图关键技术应用研究[J]. 信息技术与信息化,2020,(12):35-39.
吴明光,闾国年,陈泰生. 点状地图符号数据结构同化研究[J]. 武汉大学学报(信息科学版),2011,36(2):239-243.
Liu D L,Zhou Z Y,Wu Q,et al. Symbol recognition and automatic conversion in GIS vector maps[J]. Petroleum Science,2016,13(1):173-181.