QGIS Geology Symbology:用于 QGIS 的 FGDC 兼容地质符号-开源

上传者: 42138408 | 上传时间: 2025-04-10 14:30:01 | 文件大小: 90KB | 文件类型: ZIP
标题中的“QGIS Geology Symbology”指的是在QGIS(Quantum Geographic Information System)中用于表示地质图的符号系统,而“FGDC兼容”意味着这些符号遵循了美国联邦地理数据委员会(Federal Geographic Data Committee, FGDC)制定的标准。FGDC是美国政府机构间的一个组织,致力于推动地理空间信息的标准化和共享。在地质图制作中,符号系统是至关重要的,因为它允许用户以一致且易于理解的方式呈现地质特征。 描述中提到,“许多USGS FGDC地质地图符号化”的实现,意味着这些符号是由美国地质调查局(USGS)按照FGDC规范创建的,并且适用于QGIS环境。此外,包含的一组QGIS .qml文件代表着世界地质地图委员会(Commission for Geoscience Information, CGI)提出的地质年代地层配色方案。.qml文件是QGIS中的样式文件,用于定义图层的视觉表现,包括颜色、符号、标签等。 在提供的压缩包文件中,我们可以看到以下内容: 1. `geochron-stages.qml`、`geochron-series.qml` 和 `geochron-system.qml`:这些文件可能分别对应地质时间尺度的不同级别,如阶段(Stage)、系列(Series)和系统(System),它们定义了不同地质时期的颜色和符号。 2. `README`:这是一个通常包含项目说明、安装指南或使用提示的文本文件。 3. `fold.xml`、`fault.xml`、`contact.xml`、`joint.xml` 和 `topographic.xml`:这些可能是XML格式的地质构造符号文件,如褶皱、断层、接触面、节理和地形特征的符号定义。 4. `svg`:SVG(Scalable Vector Graphics)文件是一种矢量图形格式,可能包含了这些地质符号的源代码,可以被QGIS读取并用于地图制作。 这些资源对于地质学家和GIS专家来说非常有价值,因为他们可以在QGIS中快速创建专业且标准化的地质图。通过使用这些预定义的符号,用户能够确保他们的地图符合行业标准,同时节省了设计和绘制符号的时间。开源软件的特性意味着任何人都可以查看、修改和分享这些资源,促进了地质制图技术的发展和进步。用户可以根据自己的需求自定义这些符号,或者将其作为基础创建新的符号库。这个压缩包提供了一套完整的工具,使得QGIS用户能够更高效地创建地质相关的地图产品。

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