sDNA: how and why we reinvented Spatial Network Analysis for health, economics and active modes of transport

We introduce sDNA, a GIS/CAD tool and methodology for analysis of spatial networks. The design decisions behind the tool are documented, in particular the choice of standardizing on the network link in order to match existing data standards and increase computational efficiency. We explore the effects of this decision on algorithm design, and present results that validate our decision to depart from a recent tradition and revive a much older one.

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