Abstract
Evolution of a GIS Data Clearinghouse: From FTP to Web Services Track: Spatial Data Infrastructure Author(s): Maurie Kelly, Ryan Baxter, David Walrath Since 1996, Pennsylvania Spatial Data Access (PASDA) (http://www.pasda.psu.edu), the public geospatial data clearinghouse for Pennsylvania, has been the primary resource for locating data in the Commonwealth. The recent growth of PASDA has been exponential. PASDA now includes thousands of datasets and has evolved from an FTP site to a user-centered interface, the Data Wizard, accessing data via database queries and state-of-the-art Esri-based map and Web services. This paper will focus on the development of advanced services and applications on PASDA--resources that take advantage of the latest software and serve as a model for the advancement of the NSDI. Demonstrations of services including PennCAT--a catalog of Internet map services-and applications such as the NOAA ForecastMapper and Tropical Depression Ivan Viewer will be discussed as will the development process of the Data Wizard that involved a complete restructuring of the data, database, and user interfaces available through PASDA. Maurie Kelly Penn State University Penn State Institutes for the Environment 117 Land & Water Bldg State College , PA 16801 US Phone: 814-863-0104 Fax: 814-865-3378 E-mail: mck4@psu.edu Ryan Baxter Penn State University Penn State Institutes for the Environment 115 Land & Water Bldg University Park , PA 16802 US Phone: 814-865-8791 Fax: 814-865-3378 E-mail: reb186@psu.edu David Walrath Penn State University Penn State Institutes for the Environment 130 Land & Water Research Bldg University Park , PA PA US Phone: 814-865-9610 Fax: 814-865-3378 E-mail: dcw8@psu.edu |
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