A distributed spatial data and information delivery system for the Northern Great Plains

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Digital NGP
A distributed spatial data and information
delivery system for the Northern Great Plains
Xiaodong Zhang David Baumgartner University of
North Dakota
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What is Digital NGP

• A web-based spatial database and distribution
  system
• Raster images, vector datasets, and associated
  metadata
• Enhanced spatial data access
• Dynamically subset image and generate data
  products on the fly
• Download GeoTIFF

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Implementation

• Oracle 9i database with spatial extension (UNIX)
• MapServer, an open source project developed by
  University of Minnesota (Linux)
• Apache web server and PHP scripting language

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Recent Improvements

• Redesigned web interface
• Easier to use
• No Java required faster
• Expanded datasets
• SRTM, ASTER
• Climate, geology, agriculture GIS layers
• Interoperability
• TerraServer USA (1 m resolution BW images)
• Conform to Open Geospatial Consortium
  interoperability protocols (WFS, WMS)

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http//dngp.umac.org