开源GIS软件打造全球地图指南

GIS;Desktop
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"Desktop GIS Mapping the Planet with Open Source Tools.pdf" 《Desktop GIS Mapping the Planet with Open Source Tools》是由Gary E. Sherman编写的书籍，主要探讨了开源GIS软件在桌面GIS领域的应用。这本书对于从初级地图制作者到经验丰富的专业人员都极具价值，提供了从数据可视化到高级空间分析技术的丰富信息，是学习开源GIS技术的理想教材。 GIS（地理信息系统）是一种整合了地理信息和数据分析的强大工具，它允许用户创建、编辑、分析和展示地理分布的数据。桌面GIS是指在个人计算机上运行的GIS应用程序，提供了一种交互式的环境来处理地理信息。开源GIS软件的发展为用户提供了成本效益高、灵活性强的解决方案，不受商业软件许可限制。 本书涵盖了以下关键知识点： 1. **GIS基础**：介绍GIS的基本概念，包括空间数据的类型、坐标系统、数据结构（如矢量和栅格数据模型）以及GIS操作的基本原理。 2. **数据获取与管理**：讲解如何收集地理数据，包括遥感、GPS定位、地图数字化等，并介绍如何管理和组织这些数据。 3. **数据可视化**：涵盖地图设计原则，颜色理论，以及如何利用GIS软件创建有效的地图表达，以传达地理信息。 4. **空间分析**：深入讨论各种空间分析方法，如缓冲区分析、网络分析、地形分析和空间统计，这些都是解决地理问题的关键工具。 5. **开源GIS软件**：详细介绍常见的开源GIS软件，如QGIS、GRASS GIS、MapServer、PostGIS等，包括它们的功能、使用场景和操作指南。 6. **Web GIS集成**：讨论如何将桌面GIS与Web GIS结合，实现地理信息的在线共享和交互。 7. **项目实施与案例研究**：提供实际项目实施的指导，包括数据处理流程、问题解决策略和最佳实践，同时通过案例研究展示GIS在不同领域（如环境科学、城市规划、灾害管理等）的应用。 8. **编程与脚本**：介绍GIS中的编程和脚本，如Python和GDAL/OGR库，以实现自动化和定制化工作流程。 9. **社区与支持**：强调开源GIS社区的重要性，解释如何获取帮助、参与开发和贡献回开源GIS项目。 本书不仅适合GIS初学者作为入门教程，也适合经验丰富的GIS从业者作为参考书，提升其在开源GIS工具方面的技能。通过本书，读者可以了解到开源GIS的最新发展，掌握实用的GIS技术和工具，从而更有效地进行地球空间信息的管理和分析。

@Mapper(componentModel = "spring", unmappedTargetPolicy = ReportingPolicy.IGNORE, uses = {} ) public interface ArticleCommentWrapper extends EntityWrapper<ArticleCommentDTO, ArticleComment>{ ArticleCommentWrapper INSTANCE = Mappers.getMapper(ArticleCommentWrapper.class); @Mappings({ @Mapping(source = "channel.id", target = "channelId"), @Mapping(source = "createBy.id", target = "createBy"), @Mapping (source = "updateBy.id", target = "updateBy")}) ArticleComment toEntity(ArticleCommentDTO dto); @Mappings({ @Mapping(source = "channelId", target = "channel.id"), @Mapping (source = "createBy", target = "createBy.id"), @Mapping (source = "updateBy", target = "updateBy.id")}) ArticleCommentDTO toDTO(ArticleComment entity); }这么多mapping 是什么意思

2023-07-13 上传
`@Mappings` 注解内部可以包含多个 `@Mapping` 注解，每个 `@Mapping` 注解用于指定一个字段的映射关系。 具体来说，你的代码中定义了两个方法：`toEntity()` 和 `toDTO()`。这两个方法分别用于将 DTO（Data ...

You are creating a Web application for booking hotel rooms online. You are using Spring to create this application. When a user accesses the BookRoom.htm Web page of this application, the dispatcher servlet needs to forward the request for accessing this Web page to the BookRoomController class defined in the controller package. For this, you need to map the URL, /BookRoom.htm, with the BookRoomController class. Which of the following code snippets should you use to implement this functionality?

2023-06-10 上传
To map the URL `/BookRoom.htm` with the `BookRoomController` class, you should use the `@RequestMapping` annotation in the controller class. Here is an example of how to do this: ```java @Controller ...

Error: Cannot find module 'D:\code\something\werun\node_modules\@jridgewell\gen-mapping\dist\gen-mapping.umd.js' 这个怎么解决

2023-09-11 上传
要解决 "Error: Cannot find module 'D:\code\something\werun\node_modules\@jridgewell\gen-mapping\dist\gen-mapping.umd.js'" 错误，你可以按照以下步骤进行操作： 1. 确保你已经正确安装了需要的依赖模块。在...

autosar communication port to signal mapping

2023-04-07 上传
The mapping between communication ports and signals is defined in the AUTOSAR System Description. This mapping is used to ensure that the correct data is exchanged between software components. The ...

UnicodeDecodeError: 'cp1' codec can't decode bytes in position 0--1: No mapping for the Unicode character exists in the target code page.

2023-11-25 上传
with open('file.txt', encoding='utf-8') as f: # do something with the file ``` 2.如果您不确定文件的编码格式，请尝试使用chardet库自动检测文件的编码格式。 ```python import chardet with open('file....

You are creating a Web application for the book shop by using Spring MVC. When a user sends a request for theURL, /SearchBook.htm page in this Web application, the request needs to be handled by theSearchBookController class defined in the controller package of the Web application. For this, you used thefollowing code snippet:<beans> <bean id="ControllerHandlerMapping" class=org.springframework.web.servlet.mvcsupport,SimpleUrlHandlerMapping"/><bean class="controller SearchBookController"></beans> However, the preceding code snippet does not forward the request to the SearchBookController class. Analyze theproblem and provide the correct code snippet.

2023-06-10 上传
The code snippet provided in the question is incorrect because the `SimpleUrlHandlerMapping` bean is not properly configured to handle the URL mapping for the `SearchBookController`. To correctly map ...

can't merge a non object mapping [industry_g1] with an object mapping

2023-04-01 上传
This error message usually occurs when you try to merge a non-object mapping with an object mapping. In Elasticsearch, a mapping defines the fields and their data types in an index. For example, if ...

如何修改elasticsearch的设置增加字段大小的限制

2023-06-03 上传
index.mapping.total_fields.limit: 10000 index.mapping.depth.limit: 1000 index.mapping.nested_fields.limit: 50 index.mapping.nested_objects.limit: 10000 index.mapping.field_name_length.limit: 200 ...

SELECT t.*, m1.MD_DESCRIPTION AS mapping_column_1, m2.MD_DESCRIPTION AS mapping_column_2 FROM supplier_info t INNER JOIN uf_MDM_jyfzsj m1 ON t.VENDOR_CODE = m1.MD_NUM INNER JOIN uf_MDM_jyfzsj m2 ON t.HIS_BUYER_VENDOR_CODE = m2.MD_NUM; t.HIS_BUYER_VENDOR_CODE 不去除其中为null的数据

2023-06-04 上传
SELECT t.*, m1.MD_DESCRIPTION AS mapping_column_1, m2.MD_DESCRIPTION AS mapping_column_2 FROM supplier_info t INNER JOIN uf_MDM_jyfzsj m1 ON t.VENDOR_CODE = m1.MD_NUM INNER JOIN uf_MDM_jyfzsj m2 ON t....

A USER ERROR has occurred: Couldn't read file. Error was: ../02.mapping/L353.sort.markdup.bam with exception: Cannot read non-existent file: file:///home/ug1341/Part1.variant_calling/03.SNP_indel_bcftools/../02.mapping/L353.sort.markdup.bam 怎么解决

2023-07-25 上传
根据错误信息，脚本无法读取文件 `../02.mapping/L353.sort.markdup.bam`，因为它是一个不存在的文件。要解决这个问题，你可以尝试以下几个步骤： 1. 确保文件路径是正确的：检查文件路径 `../02.mapping/L353.sort...
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