Flow maps Flashcards
what if flow mapping
- depicts movement of a phenomena
- uses line symbols
why are flow maps good?
it is intuitive
what kind of data does it require?
any type of data can be used NOIR
what are the two types of symbology
Actual path, and stylized path
do flow maps require derived data?
No! raw data only. Derived data do not flow
what are the three types of flow maps?
- Radial
- network
- distributive
what is a radial flow map
multiple sources to one destination
what is a network flow map
interconnectivity with multiple locations
what is a distributive flow map
multiple sources to selected destinations
what is a narrative flow map
flow is over time rather than explicitly geography
what is the scaling issue with flow maps
lines get big thick, so having multiple lines connecting at different widths may look bad
how do flow lines play in visual hierarchy
they are the highest with good figur ground separation.
