Maps
From WikiViz
Maps provide the unique ability to display information visually in relationship to its physical (spatial) location. They are indicated when we want to rapidly compare spatial relationship, or to see how the data is distributed geographically (R.L. Harris, 99)
Image from: http://www.fas.usda.gov |
File:Map londonTube partial.jpg Partial image from http://tube.tfl.gov.uk |

