Wayward·House

Essays Signals Library

Part 3: GIS and Spatial Analysis

The practical toolkit of overlays, rasters, terrain logic, and computational geography.

Textbook Part

GIS and Spatial Analysis

This part is where the book becomes recognisably GIS and spatial computation. It asks how locations become data, how vector and raster operations work, and how those operations become real analytical workflows.

Start Part 3

9 core chapters GIS toolkit Part 3

Role Give readers the practical working toolkit of computational spatial analysis.

Sequence The first nine chapters here form a strong main route. Save the classification and time-series extensions for later if needed.

Part Route

How The Spatial Analysis Toolkit Fits Together

This part is easier to learn when the chapters read like a toolkit instead of an arbitrary list. The route starts with predicates and rasters, moves through vector operations, then builds up to terrain and monitoring workflows.

Start Here

Predicates and Raster Basics

Learn how spatial relationships and cell grids represent geographic space.

• Point-in-polygon
• Raster resampling
• Map algebra
• Raster classification

→

Then Build

Vector Analysis Toolkit

Turn geometry into queries about distance, overlap, and matching features.

• Buffers
• Overlay
• Spatial joins

→

Apply To Terrain

Surface and Network Reasoning

Use elevation and friction surfaces to reason about visibility, flow, and movement.

• Viewsheds
• Least-cost paths
• Watersheds

Extend the toolkit: classification, change detection, and time-series chapters show how these same spatial primitives support remote sensing workflows.

The part works best as a progression: represent space, operate on geometry and rasters, then combine those operations into terrain and monitoring models.

Chapter Map

K

Spatial Predicates and Raster Foundations

• Point-in-Polygon Testing
• Raster Resampling and Interpolation
• Map Algebra and Focal Operations
• Raster Classification and Reclassification

L

Vector Operations

• Buffer Operations and Distance Fields
• Polygon Overlay and Clipping
• Spatial Joins and Proximity Queries

M

Terrain Analysis

• Viewshed and Line-of-Sight Analysis
• Watershed Delineation and Flow Networks

Least-cost path analysis continues this terrain toolkit in the topic-libraries volume.

N

Explore More Later

• Cost-Distance and Least-Cost Paths
• Supervised Image Classification
• Change Detection in Satellite Imagery
• Time Series Analysis of Satellite Data

These chapters are part of the topic-libraries volume, so they are intentionally not linked from the core-book build.