A Linear Referencing System for Synchronizing Independent Data Sets (with speaker notes).pdf

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One Massachusetts state agency maintains a road data set to manage physical assets, while another maintains a road data set to support emergency dispatch. Each set could enrich the other, adding new attributes or revealing errors in existing ones; but permanently combining the data sets and maintaining them jointly is not currently feasible. Instead, a robust relationship based on linear referencing keeps the sets synchronized, transforming length- and direction-dependent attributes as needed.