Chapter 7 Visualizing geographic data
- Material mostly based on Wickham (2016 Chapter 3.7)
- Objective:
- Show variation across geographic entities
- Show location of particular places or where data originated
- Illustrate comparative strategy
- Usage: Often to illustrate were data was collected or how it varies across geographic units
- Map data is tedious… :-S
- Types of data: vector boundaries, point metadata, area metadata, raster images (Wickham 2016, 55f)
- Challenges: Map data may change (e.g., changes of administrative boundaries)
References
Wickham, Hadley. 2016. Ggplot2: Elegant Graphics for Data Analysis. Springer.