文档介绍：New Tools For Handling Spatial Data Quality:
Moving from Academic Concepts to Practical Reality
Dr. Gary J. Hunter
Abstract: While the growth in spatial data quality research has increased dramatically during the past decade in response to user
needs, many of the concepts developed have yet e to fruition in the form of usable tools that can be readily applied in
practice mercial GIS packages. As such, the purpose of this paper is to report on some of the tools ing available for
implementation by users of spatial data that have been developed by the author and his colleagues over the past few years. The
examples presented cover: (1) the tracking of feature coordinate edits and their reporting in visual data quality statements; (2)
testing and reporting the positional accuracy of linear features of unknown lineage; (3) simulating uncertainty in products
derived from Digital Elevation Models; (4) incorporating uncertainty modeling in vector point, line and polygon files, and (5)
reporting data quality information at different levels of database structure. In several of these cases, public domain software
already exists on the for application by GIS users, which serves to demonstrate that data quality research is indeed
moving from academic concepts to practical reality.
Introduction While the latter problem will require closer liaison between
For several years now