The magnitude or amount of migration in a single flow line is represented by its thickness. Thus the use of lines on a flow map is similar to the use of graduated symbols on other types of thematic maps chang 2012.
Flow maps are a type of thematic map used in cartography to show the movement of objects between different areas.
Flow line map. In radial flow maps lines radiate from an origin node to a single or multiple destination nodes. Flow maps usually represent the movement of goods weather phenomena people and other living things with line symbols of different widths. What is a flow line map.
Flow maps geographically show the movement of information or objects from one location to another and their amount. Typically flow maps are used to show the migration data of people animals and products. Each hub links that movement of a phenomenon with a directional flow line often in a radial pattern.
It may thus be considered a hybrid of a map and a flow diagram the movement being mapped may be that of anything including people highway traffic trade goods water ideas or even telecommunications data. Thematic mapping techniques 2. Essentially this displays what where and how much does.
The wide variety of moving material and the variety of geographic networks through they move has led. In this example we use the united states foreign trade census data. A flow map is a type of thematic map that uses linear symbols to represent movement.
A flow line for a map on a vector field f is a path sigma t such that sigma t f sigma t.