Definition provided by Di-Ann Eisnor of Platial:

Transactional cartography is the movement from map providing entertainment/information to map as enabling action. This shift in mapmaking is possible due to the merging of crowd-sourced information and access to real time data. Both bring location to vast amounts of complex data and allow for new forms of analysis and visualization. In the past we emphasized mapping (relatively) static objects like rivers and roads, it evolved to mapping people and their movements and now continues to accelerate to mapping complex processes. Transactional cartography and the utilization of these new sources and abundance of data can actually impact decisions and actions such as a when/where to purchase a product, when/where and with whom to barter, when/where most effective routes for emergency response, when/where to build new roads or public facilities, when/where to buy a home, change a route or itinerary based on real-time circumstances and real world situation. In this realm, time is inextricably linked to location which removes historic obstacles to actionable or live mapping.

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