M F 8: Notes: Mitchell Chp. 2-4

Chapter 2:  Mapping where things are

• Can show where things are or where areas are that meet your criteria
• Can investigate causes of patterns
• To look for patterns in data, map features in a layer using different symbols

Each point must have a latitude-longitude coordinate or street address.

You can map all features in a data layer or just a subset of it.

You need to be explicit about what each feature category include so readers know what the map represents.

Chapter 3:  Mapping the most and least

• You can better see where things are more/less concentrated than you can if you just graph locations
• Classification schemes:  natural breaks; quantile; equal interval
• You can use graduated symbols, graduated colors, charts, contours, or a 3-D perspective to map things, depending on what you are trying to represent.

Chapter 4:  Mapping density

• Particularly useful for looking at patterns instead of individual locations.
• You have to be aware of how you represent your data so your map is not too clustered or too hard to read.