Flow Map

http://www.personal.psu.edu/jnm5195/Flow%20map.jpg

Main page: http://www.personal.psu.edu/jnm5195/

A flow map is used to annotate movement in or out of an area, especially dealing with goods and immigration. The thickness of the arrows of travel represent value, usually the thicker the arrow, the higher the value. The map above depicts immigration to the United States with the legend giving the value of immigrants for each continent. This map can be very useful in providing information on which continents had more immigrants come to the U.S. than others.