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Washington Geospatial Data Archive WAGDA 2.0 Project

Washington Geospatial Data Archive WAGDA 2.0 Project. University of Washington Libraries. Agenda. WAGDA 2.0 Motivation/Background WAGDA 2.0 Technical Overview Use Cases/Demo Stories/Prototypes Review of Survey Results. Background and motivation.

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Washington Geospatial Data Archive WAGDA 2.0 Project

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  1. Washington Geospatial Data ArchiveWAGDA 2.0 Project University of Washington Libraries

  2. Agenda • WAGDA 2.0 Motivation/Background • WAGDA 2.0 Technical Overview • Use Cases/Demo Stories/Prototypes • Review of Survey Results

  3. Background and motivation • WAGDA started in mid 1990’s to provide more convenient access to geospatial data needed for teaching/learning • .zip file packages, served via http and/or ftp • metadata and discovery not well integrated • doesn’t really provide a systematic foundation for broader data sharing, archiving, data management

  4. Convergences • Work on NSF DataNet proposal (not funded) helped raise Libraries’ interest in data services • Articulated need for easier ways to discover and share geospatial data • Willingness of faculty and researchers in Geography, Oceanography, APL to help us • UCGIS interest in “enterprise GIS” • Interest in data sharing from potential external partners

  5. Project Goals • Near term: improve discovery and access to existing WAGDA data • Load existing WAGDA data into geodatabase • Provide access via web services and direct db connection (as appropriate) • Load metadata for this data into geoportal • Medium term: begin to accept data from other campus entities • Longer term: expand pool of data providers beyond campus

  6. Startup Activities • Prototyping environment using ArcGIS Server 9.3.1 and geoportal extension • Geography 469 capstone project: develop geodatabase around a coastal zone model • Test data loaded from WAGDA, PSNERP, SSHIAP • Expose test data via direct geodb connections, web services • Begin to identify gaps in functionality • Engage ESRI professional services

  7. Systems Overview - Roles

  8. System Overview - Design

  9. Systems Components • Data Storage using PostgreSQL & ArcSDE • Metadata hosting using ArcGIS Server & Geoportal • Data discovery and dissemination usingArcGIS Server Services & GeoPortal • All the data services available in ArcGIS • Which services have been chosen so far • Are they the appropriate services?

  10. WAGDA Data Loading • Physical hand off of data, loaded by library staff • City of Seattle • NAIP Aerial imagery • Direct database replication • CSDE (Census Summary Files) • Non-university organizations • Operations (Operations, Capital Projects Office, etc.)

  11. User Data Discovery • GeoPortal – wagda.lib.washington.edu/geoportal

  12. User Data Access • Data Access • Multiple Services (currently in development) ● supported - ○ unverified - (blank) not supported - (grey) not preferred

  13. Use Cases • WAGDA 2.0 customers – campus segments • Teaching • Research • UW Operations

  14. Teaching – Calculate NDVI using ArcGIS 9 WAGDA 1.0 • Navigate WAGDA • Download zipped index file • Unzip index file • Load into ArcMAP • Identify image tile(s) • Email request to WAGDA • Download imagery from temporary FTP site • Unzip imagery • Load imagery into ArcMap • Calculate NDVI Time: 5 minutes plus email response time (longer if after hours!) WAGDA 2.0 • Connect to ArcSDEGeodatabase • Navigate to NAIP 4-band imagery • Add to ArcMap • Calculate NDVI Time: 2 minutes

  15. Teaching – Calculate NDVI Connect Perform Analysis

  16. Research – Changes in Population Density using ArcGIS 9 WAGDA 1.0 • Navigate WAGDA • Download Census data • Email request to WAGDA • Download historic Census data from WAGDA • Unzip all Census data • Identify tables of interest in data dictionary • Load Census data into ArcMap • Join geometry to tables • Calculate Population Density Time: 2 hours WAGDA 2.0 • Connect to ArcSDEGeodatabase • Navigate to Census feature class • Calculate Population Density (common variables pre-joined. Specific variables require more user input) Time: 15 minutes

  17. Research – Changes in Population Density 1970 1980 1990 2000

  18. UW Operations – Mapping UW Buildings using ArcGIS 9 WAGDA 1.0 • Building data does not currently exist on WAGDA 1.0 • Contact various UW Operations departments for owner of needed data (UW Operations receives many requests for building data) • Receive email from UW Operations • Load building data into ArcMap • Make map of UW buildings Time: Not possible WAGDA 2.0 • Connect to ArcSDEGeodatabase • Connect to WAGDA using the geodatabase service (or WFS) serving an archived dataset. The data will be updated on an agreed schedule. • Make map of UW buildings Time: ? DRAFT

  19. Survey results • 16 respondents (9 use spatial data in teaching)How do you currently address data dissemination?

  20. Survey results How would you prefer to access data? Instruction Research

  21. Survey results Top 5 Data Formats Currently Used

  22. Timeline • Alpha testing in Autumn Quarter • Working beta version for Winter Quarter • Scale up for production resources permitting

  23. Discussion and next steps • Students to provide feedback • Providing metadata and/or data? • Volunteers, ideas for testing? • Helping with technical direction/participation?

  24. Thank you! Contacts: Bill Jordan bjordan@uw.edu Matt Parsons parsonsm@uw.edu Tim Nyerges nyerges@uw.edu

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