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Locating the Geographic Center of DDI 3.0

Presenter 1
Wendy Thomas
University of Minnesota

For years the DDI has struggled with improving its ability to cover geographic information. Each of the past three revisions included new elements and attributes to address geography. The structural changes taking place in DDI 3.0 provided an opportunity to make major improvements in geographic information. A working group of the Expert Committee was formed to address the following needs: (1) Provide a means of describing geographic coverage that allows for more detail and better alignment with other description standards; (2) Describe geographic hierarchies and the relationship of those levels; and (3) Expand the ability to reference external maps and geographic data files (shape/boundary). The changes introduced in DDI 3.0 allow for improved description, searching, manipulating, and linking data based on geography. This presentation reviews what was changed, why it was done, and how it improves your ability to work with data.

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