Assessing the Quality of Spatial Data

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Executive Summary

Data sharing and data integration are inevitable consequence of the widespread availability of Geographic Information System (GIS) technologies due to the high initial cost of establishing a spatial database. Because spatial data is transferred and shared by many users, the data must be trustworthy and useful. To ensure that existing digital data is appropriately used, the data producer must provide documentation about the history of spatial data. In addition, data developers and users have begun to document and implement data quality measurements which allow judgment to be made about spatial data. Spatial data is frequently relied upon as factual data and good data quality measures and documentation may eliminate liability law suits against data developers and users.

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