Graphics Reference
In-Depth Information
and Germanic peoples to the United States, Portuguese to Brazil, as well as
Africans, Indians, and Chinese to other locations.
Graphs can be made to analyze the movement of people, goods, or money,
whether across the world, through processes, or through websites. Another
of our early projects was for an airline company that wanted to analyze
performance across its route network. Each link in the graph showed a flight
route and had metrics such as revenue, passenger counts, efficiency, and
profitability.
Figure 1-3:
Joseph Minard's flow graph shows emigrants worldwide in
1858.
Note
A number of examples in this topic look at statistics about movement
between locations, specifically in the discussions in Chapter 12,
“Flows.”
