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所在平台: Udemy |
课程主页: https://www.udemy.com/course/processing-survey-data-in-gcs-with-arcgis-desktop-108/
课程评论：没有评论
课程名称：在 ArcGIS Desktop 10.8 中处理 GCS 调查数据 课程概述： 本课程旨在介绍如何使用 ArcGIS Desktop 10.8 处理和分析地理空间数据，特别是关注于将调查数据整合进地理数据库 (Geodatabase, .gdb)。 1. **Geodatabase 介绍**：地理数据库是一种用于存储、管理和分析地理数据的空间数据存储格式，由 Esri 开发。它允许用户以组织化的方式高效管理空间数据及其属性。 2. **Geodatabase 与 Shapefile 对比**：Geodatabase 和 Shapefile 是 GIS 中用于存储空间数据的两种数据格式。课程将探讨二者在存储结构、容量、数据支持、可扩展性、性能以及兼容性方面的差异。适用场景如下： - 如果需要处理大型复杂数据集、进行综合数据管理，选择 Geodatabase。 - 如果数据集较小且需要简单格式分享，选择 Shapefile。 3. **将 SHP 导出到 GDB**：课程讲解如何将现有的 SHP 数据导出到 GDB，以节省时间并进行实践。 4. **处理 XLS 格式的现场调查数据**：在 ArcMAP 处理之前，需要先清理 XLS 格式的数据，例如确保列名不含空格。 5. **导出 XLS 为 CSV**：经过清理后，将 XLS 数据导出为 CSV 格式。 6. **在 ArcMAP 中绘制调查点分布数据**：将 CSV 数据添加至 ArcMAP，并在地理坐标系统 (GCS) 下以十进制度格式绘制调查点分布。 7. **将绘制数据导出至 GDB**：将已添加至 ArcMAP 画布的调查点分布数据导出为 GDB，以保证数据的持久性。 8. **创建空间模型**：以 GDB 中存储的调查点分布为基础，创建主题空间模型，以更清晰地展示基于属性数据（如年龄、月度和年度收入）的数据分布。 9. **在 ArcMAP 文档中设计布局**：为以上的每个空间模型创建布局，以便于呈现和解读数据。 总的来说，本课程将提供关于如何使用 ArcGIS Desktop 10.8 处理和分析调查数据的综合知识，使参与者能够有效运用 GIS 技术进行数据管理和展示。
1. Introduction to Geodatabase (.gdb),Geodatabase is a spatial data storage format used in Geographic Information Systems (GIS). Developed by Esri, geodatabase functions as a container for storing, managing, and analyzing geographic data efficiently in an organized form. Geodatabase allows users to manage spatial data and its attributes in an integrated manner in one database.2. Geodatabase VS Shapefile.Geodatabase and Shapefile are two data formats that are often used in Geographic Information Systems (GIS) to store spatial data. However, both have significant differences in terms of capability, efficiency, and functionality. The comparison between the two includes storage structure, storage capacity, data and function support, scalability and collaboration, performance and compatibilityChoose Geodatabase if:- You work with large and complex datasets.- Need integrated data management (multi-layer, relations, topology rules).- Using GIS on a large organizational scale.Choose Shapefile if:-You need a simple format to share data with multiple platforms.-Your dataset is small, with simple analysis needs.Although shapefiles are still widely used because of their simplicity, geodatabases offer far superior capabilities for modern GIS needs.3. Export SHP to GDBGDB is capable of creating new features, but on this occasion we will export existing SHP data to GDB, in addition to saving time, we can also practice. Besides SHP, other popular data formats are KML and geoJSON.4. Process field survey data in XLS format, edit and clean dataBefore being processed in ArcMAP, field data in XLS format is first cleaned, such as column names that must not contain spaces.5. Export XLS to CSVAfter being cleaned, the XLS data is exported to CSV.6. Plotting survey point distribution data CSV to ArcMAP, XY data in Geographic Coordinate System (GCS) in decimal degree (DD) formatThe CSV data is then added and plotted to ArcMAP. Plotting or displaying the distribution of survey points on the ArcMAP canvas is done using 2 (two) columns/fields, a combination of X/Longitude/Longitude and Y/Latitude/Latitude as the coordinate points of the earth where the survey respondents are located. The coordinate system used in this course is the Geographic Coordinate System (GCS) with degrees (Degree) and in Decimal Degree/DD format7. Export plotting data to GDBThe distribution of survey points that have been added to the ArcMAP canvas is temporarily stored in memory (temporary layer), to make it permanent we will export this point distribution data to GDB8. Creating a spatial modelWe will create a spatial model from the distribution of survey points that have been stored in GDB. This spatial model can be thematic and choropleth. The spatial model will provide a clearer picture of how this data is distributed based on the attribute data obtained such as the age spatial model, the monthly turnover spatial model, the annual turnover spatial model and others.9. Designing a Layout in an ArcMAP document (MXD).We will create a layout in ArcMAP. We create a layout for each of the spatial models above.
