Track: Federal Government Systems
EnviroMapper - The Visualization Tool to the Envirofacts Warehouse
Vincent ZhuangJohn Sun , Dave Wolf, Matthew Moss and Seth Israel
The Environmental Protection Agency's Envirofacts Warehouse Web site is visited nearly one million times every month via the World Wide Web at www.epa.gov/enviro. Envirofacts includes many gigabytes of both spatial and nonspatial data. Online GIS applications, known as Maps On Demand (MOD), add a new dimension, visualization, to the information contained in the Warehouse. However, the existing geospatial database cannot be effectively served for comprehensive Web-based GIS applications; MOD cannot be easily upgraded to produce real-time maps in interactive mode. EnviroMapper, a Web-based interactive GIS application, begins a new generation of MOD. It provides a true, visual path to Envirofacts using the latest technology including the World Wide Web, virtual seamlessness, a spatially enabled relational database management system, and the object linking and embedding Component Object Model. The legacy geospatial data were reengineered and are being moved to an Oracle relational database. EnviroMapper bridges GIS and online queries within the Envirofacts Warehouse. It also delivers information and data in a graphic user interface that has been widely used in desktop GIS applications. EnviroMapper is a comprehensive visualization tool to the data in the Envirofacts Warehouse. It will also serve as the core component for the upcoming On-Line Analysis Process within Envirofacts.
Vincent Zhuang
SAIC
200 N. Glebe Road
Arlington, VA 22203
USA
Telephone: 703-908-4425
Fax: