重要

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6. Module: Vector Analysis

现在已经编辑了一些要素，您一定想知道还可以用它们做些什么。拥有属性的要素是不错，但当所有内容都尘埃落定时，这并不能真正告诉您任何普通的非GIS地图无法告诉您的内容。

地理信息系统的主要优势在于: GIS可以回答问题。

在接下来的三个单元，我们将努力使用GIS功能回答 研究问题 。例如，您是一名房地产经纪人，正在 Swellendam 为符合以下条件的客户寻找一处住宅物业：

1. 必须位于 Swellendam 。

2. 必须在学校的合理驾驶距离内 (比如1千米)。

3. 它的面积必须超过 100m 的平方。

4. 距离主干道50米以内。

5. 距离餐厅500米以内。

在接下来的几个单元，我们将利用GIS分析工具的强大功能，为这一新住宅开发找到心怡的场所。

• 6.1. Lesson: Reprojecting and Transforming Data
  • 6.1.1. ★☆☆ Follow Along: Projections
  • 6.1.2. ★☆☆ Follow Along: "On the Fly" Reprojection
  • 6.1.3. ★★☆ Follow Along: Saving a Dataset to Another CRS
  • 6.1.4. ★★★ Follow Along: Creating Your Own Projection
  • 6.1.5. In Conclusion
  • 6.1.6. Further Reading
  • 6.1.7. What's Next?
• 6.2. Lesson: Vector Analysis
  • 6.2.1. ★☆☆ The GIS Process
  • 6.2.2. ★☆☆ The Problem
  • 6.2.3. ★☆☆ The Data
  • 6.2.4. ★☆☆ Follow Along: Start a Project and get the Data
  • 6.2.5. ★☆☆ Try Yourself: Convert Layers' CRS
  • 6.2.6. ★☆☆ Follow Along: Analyzing the Problem: Distances From Schools and Roads
  • 6.2.7. ★☆☆ Try Yourself: Distance from schools
  • 6.2.8. ★☆☆ Follow Along: Overlapping Areas
  • 6.2.9. ★☆☆ Follow Along: Extract the Buildings
  • 6.2.10. ★★☆ Try Yourself: Further Filter our Buildings
  • 6.2.11. ★☆☆ Follow Along: Select Buildings of the Right Size
  • 6.2.12. ★☆☆ Try Yourself:
  • 6.2.13. In Conclusion
  • 6.2.14. What's Next?
• 6.3. Lesson: Network Analysis
  • 6.3.1. ★☆☆ Follow Along: The Tools and the Data
  • 6.3.2. ★☆☆ Calculate the shortest path (point to point)
  • 6.3.3. ★★☆ Try Yourself: Fastest path
  • 6.3.4. ★★☆ Follow Along: Advanced options
  • 6.3.5. ★★★ Shortest path with speed limit
  • 6.3.6. ★★☆ Service area (from layer)
  • 6.3.7. In Conclusion
  • 6.3.8. What's Next?
• 6.4. Lesson: Spatial Statistics
  • 6.4.1. ★☆☆ Follow Along: Create a Test Dataset
  • 6.4.2. ★☆☆ Follow Along: Basic Statistics
  • 6.4.3. ★☆☆ Follow Along: Compute statistics on distances between points
  • 6.4.4. ★☆☆ Follow Along: Nearest Neighbor Analysis (within layer)
  • 6.4.5. ★☆☆ Follow Along: Mean Coordinates
  • 6.4.6. ★☆☆ Follow Along: Image Histograms
  • 6.4.7. ★☆☆ Follow Along: Spatial Interpolation
  • 6.4.8. ★★☆ Try Yourself: Different interpolation methods
  • 6.4.9. In Conclusion
  • 6.4.10. What's Next?