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O NLINE GAP D ATA E XPLORER T OOL : An Open Source GIS Decision Support Tool for Gap Analysis Data. Steven G. Williams , James B. White Biodiversity and Spatial Information Center NC Cooperative Fish & Wildlife Research Unit North Carolina State University. 11 September 2007 Asheville, NC.

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o nline gap d ata e xplorer t ool an open source gis decision support tool for gap analysis data

ONLINE GAP DATA EXPLORER TOOL:An Open Source GIS Decision Support Tool for Gap Analysis Data

Steven G. Williams, James B. White

Biodiversity and Spatial Information Center

NC Cooperative Fish & Wildlife Research Unit

North Carolina State University

11 September 2007

Asheville, NC

standard gap data distribution
Standard GAP Data Distribution
  • 500+ data layers
  • 2+ CD set

Big, Serious GIS Data

  • Difficult to access
built around the rtncf ecosystem gap dataset
Built around the RTNCF Ecosystem GAP Dataset
  • Displays data quickly and easily
  • Based on a full-featured installation of ArcView 3.2 with Spatial Analyst
  • Allows for a wide array of skill levels
rationale for moving to web delivered decision support tool

RTNCF Dataset

Rationale for moving to web-delivered Decision Support Tool
  • Requirements:
    • Expensive proprietary software required
    • Data set is static and dispersed
  • 365 raster data layers
  • 3+ gigabits of data
rationale for moving to web delivered decision support tool1
Rationale for moving to web-delivered Decision Support Tool
  • 420 raster data layers
  • 22+ gigabits of data

NC State Dataset

rationale for moving to web delivered decision support tool2
Rationale for moving to web-delivered Decision Support Tool
  • Requirements:
    • Browser and internet connection
    • Single, centralized data set
  • 800+ raster data layers
  • 300+ gigabits of data
  • Online analysis capabilities are a necessity for users without substantial GIS hardware/software capabilities

SW Regional Dataset

slide9

Main Map Frame

Control Frame

3 tabs

View Layers

Define AOI

Legends

Inset Map Frame

List Frame

Tools Frame

what s next
What’s Next…
  • Puerto Rico GAP Dataset
  • Session histories tied to logins…
    • Ability to save session to allow users to work on an analysis over time
  • Precompiled reports …
    • Large extent AOIs

Lots of challenges!