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Pitfalls of SDI's Hierarchy

A spatial data infrastructure model must serve many constituents. Asmat Ali, the Assistant Director of the Survey of Pakistan, explains how the data may be developed by corporate, local, state, national, regional or global interests, and each potential creator imbues them with different characteristics "due to different needs at these different levels." That, he suggests, presents a potential pitfall, which he aims to address via a new SDI hierarchy model for federated nations.

poll results

Final results of the current poll (85 respondents) show that even mapophiles prefer a text front page for news. The poll asked, "How often do you use mapping interfaces to the news, such as Google Earth's new layer of New York Times stories or MetaCarta's GeoSearch News?" The new poll asks, "Does the new status of KML as an OGC standard change how you or your organization will use it?" Vote today (lower right side of the home page)!

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