Geometry Operations and Functions
6. Geometry Operations and Functions
6.4. Installation and Setup
6.4.1. Library Import and Configuration
6.4.2. Downloading the Sample Data
6.5. Connecting to DuckDB and Loading Extensions
6.5.1. Installing and Loading the Spatial Extension
6.5.2. Exploring the Database Contents
6.6. Understanding Geometry Types
6.6.1. Creating Sample Geometries from WKT
6.6.2. Converting Geometries to Readable Text
6.6.3. Exporting Sample Geometries
6.7. Working with Points
6.7.1. Examining Point Geometry Structure
6.7.3. Analyzing Real-World Point Data
6.8. Working with Linestrings
6.8.1. Examining Linestring Geometry Structure
6.9. Working with Polygons
6.9.1. Examining Polygon Geometry Structure
6.9.2. Analyzing Polygon Properties
6.10. Working with Collections
6.10.1. Examining Collection Geometry Structure
6.11. Visualizing NYC Spatial Data
6.11.1. Visualizing Subway Stations (Points)
6.11.2. Visualizing Streets (LineStrings)
6.12. Geometry Processing
6.12.1. Creating Buffers and Finding Centroids
6.12.2. Simplification and Envelopes
6.12.3. Overlay Operations
6.13. Geometry Validity and Robustness
6.13.1. Understanding Geometry Validity
6.13.2. Testing and Repairing Geometry Validity
6.13.2.1. Example 1: Self-Intersecting Polygon (Bow-Tie Shape)
6.15. Exercises
6.15.1. Exercise 1: Creating Basic Geometries from WKT
6.15.3. Exercise 3: Measuring Polygon Properties
6.15.4. Exercise 4: Creating Buffers for Proximity Analysis
6.15.5. Exercise 5: Geometry Type Inspection
6.15.6. Exercise 6: Simplifying Complex Geometries
6.15.7. Exercise 7: Calculating Distances Between Features
6.15.9. Exercise 9: Validating and Repairing Geometries
6.15.10. Exercise 10: Practical Integration Challenge
