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1838 map of pre-railroad cargo traffic in Ireland, one of the first thematic maps to use proportional symbols. The earliest known map to visually represent the volume of flow were two maps by engineer Henry Drury Harness, published in 1838 as part of a report on the potential for railroad construction in Ireland, showing the quantity of cargo traffic by road and canal.
Minard created his "revolutionary" [2]: 40 first flow map in 1845 to inform the discussion about routing the rail line in the area between Dijon and Mulhouse. The map shows traffic on the pre-existing roads in the area. Two hundred copies of it were distributed to various stakeholders, and it dominated the debate among the deputies and engineers.
A compressor map is a chart which shows the performance of a turbomachinery compressor. This type of compressor is used in gas turbine engines, for supercharging reciprocating engines and for industrial processes, where it is known as a dynamic compressor. A map is created from compressor rig test results or predicted by a special computer program.
Flow map depicting US aid to Africa in 2016. Source: USAID. Flow maps are maps that use line symbols to portray movement or relationship between two or more places, such as air travel, monetary aid, or economic trade. The lines may be schematic straight lines or curves, or may represent the actual travel route.
It is a flow map, overlaying a Sankey diagram onto a geographical map. It was created in 1869, predating Sankey's first Sankey diagram of 1898. Minard had used this form of diagram for visualising flow of goods and transport of people from at least since 1844. [6]
Flow diagram is a diagram representing a flow or set of dynamic relationships in a system. The term flow diagram is also used as a synonym for flowchart, [1] and sometimes as a counterpart of the flowchart. [2] Flow diagrams are used to structure and order a complex system, or to reveal the underlying structure of the elements and their ...
A Flow map focuses on lines of movement. A wide variety of flow maps exist, depending on whether flow volume is represented (usually using visual variables such as stroke weight or color value), and whether the route of flow is shown accurately (such as a navigation route on a Road map) or schematically (such as a Transit map or airline route map)
In 1988, David Hyerle wrote Expand Your Thinking and introduced Thinking Maps. These are a set of techniques used in primary and secondary education with the intention of providing a common visual language to information structure. There are eight types of maps: Circle Map: used for defining in context; Bubble Map: used for describing with ...