PostGIS in Action, Third Edition
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PostGIS in Action, Third Edition teaches readers of all levels to write spatial queries for PostgreSQL. It first gives you a background in vector-, raster-, and topology-based GIS and then quickly moves into analyzing, viewing, and mapping data. This fully updated third edition covers key changes in PostGIS 3.0 and PostgreSQL 12, including parallelization support, partitioned tables, and new JSON functions that help in creating web mapping applications.A must-read book for novice geographers.
Table of Contents takes you straight to the bookdetailed table of contents
Part 1: Introduction to PostGIS
1 What is a spatial database?
1.1 Thinking spatially
1.2 Introducing PostGIS
1.3 Why PostGIS
1.3.1 Standards conformance
1.3.2 Built on top of PostgreSQL
1.3.3 Free—as in money
1.3.4 Alternatives to PostGIS
1.3.5 Oracle Spatial
1.3.6 Microsoft SQL Server
1.4 Installing PostGIS
1.4.1 Verifying versions of PostGIS and PostgreSQL
1.5 Spatial data types
1.5.1 Geometry type
1.5.2 Geography type
1.5.3 Raster type
1.5.4 Topology type
1.6 Hello real world
1.6.1 Digesting the problem
1.6.2 Modeling
1.6.3 Loading data
1.6.4 Writing the query
1.6.5 Viewing spatial data with OpenJump
1.7 Summary
2 Spatial data types
2.1 Type modifiers
2.2 Subtype type modifiers
2.2.1 Spatial reference identifier
2.3 Geometry
2.3.1 Points
2.4 Geography
2.4.1 Differences between geography and geometry
2.4.2 Spatial catalogs for geography
2.5 Raster
2.5.1 Properties of rasters
2.5.2 Creating rasters
2.5.3 Spatial catalog for rasters
2.6 Summary
3 Spatial reference systems
3.1 Spatial reference systems: What are they?
3.2 Geoids
3.3 Ellipsoids
3.4 Datum
3.4.1 Coordinate reference system
3.4.2 Spatial reference system essentials
3.4.3 Projections
3.5 Selecting a spatial reference system for storing data
3.5.1 Pros and cons of using EPSG:4326
3.5.2 Geography data type for EPSG:4326
3.5.3 Mapping just for presentation
3.5.4 Covering the globe when distance is a concern
3.6 Determining the spatial reference system of source data
3.6.1 Guessing at a spatial reference system
3.6.2 When the spatial reference system is missing from spatial_ref_sys table
3.7 Summary
4 Working with real data
4.1 General utilities
4.1.1 PostgreSQL built-in tools
4.1.2 Downloading files
4.1.3 Querying external data using PostgreSQL foreign data wrappers
4.2 Summary
5 Using PostGIS on the desktop
Part 2: PostGIS basic operations
6 Geometry and geography functions
7 Geometry relationships
Part 3: Putting PostGIS to work
8 Proximity analysis
9 Geocoding and Reverse Geocoding
10 Geometry and geography processing
11 Raster processing
12 Building and using topologies
13 Organizing spatial data
14 Query performance tuning
Part 4: Using PostGIS with other tools
15 Extending PostGIS with pgRouting and procedural languages
16 Using PostGIS in web applications
Appendixes
Appendix A: Additional resources
Appendix B: Installing, compiling, and upgrading
Appendix C: SQL primer
Appendix D: PostgreSQL features
About the Technology
Processing location and topology data requires specialized know-how. PostGIS is a free spatial database extender for PostgreSQL that delivers the features and firepower you need to take on nearly any geodata task. With it, you can easily create location-aware queries in just a few lines of SQL code and build the back end for a mapping, raster analysis, or routing application with minimal effort.About the book
PostGIS in Action, Third Edition teaches you to solve real-world geodata problems. It first gives you a background in vector-, raster-, and topology-based GIS and then quickly moves into analyzing, viewing, and mapping data. You'll learn how to optimize queries for maximum speed, simplify geometries for greater efficiency, and create custom functions for your own applications. You'll also learn how to apply your existing GIS knowledge to PostGIS and integrate with other GIS tools. Fully updated to the latest versions of PostGIS and PostgreSQL, this Third Edition covers new PostGIS features including Foreign Data Wrappers, Database as a Service, parallelization of queries, and new JSON and Vector Tiles functions that help in creating web mapping applications.What's inside
- An introduction to spatial databases
- Geometry, geography, raster, and topology spatial types, functions, and queries
- Applying PostGIS to real-world problems
- Extending PostGIS to web and desktop applications
- Updated for PostGIS 3 and PostgreSQL 12
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