Unit 1

Absolute distance

A distance that can be measured with a standard unit of length, such as a mile or kilometer

Absolute location

The exact position of an object or place, measured within the spatial coordinates of a grid system

Accessibility

The relative ease with which a destination may be reached from some other place

Aggregation

To come together into a mass, sum, or whole

Azimuthal projection

A map projection in which the plane is the most developable surface

Breaking point

The outer edge of a city's sphere of influence, used in the law of retail gravitation to describe the area of a city's hinterlands that depend on the city for its retail supplies

Cartograms

A type of thematic map that transforms space such that the political unit with the greatest value for some type of data is represented by the largest relative area