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Exploring Spatial Data Infrastructure in an Open Source World

Explore the world of Spatial Data Infrastructure (SDI) through a collaborative framework for geospatial data storage, access, and management. Learn about GeoNode, asset uploading and downloading, metadata, and automated publishing to GeoServer. Discover the benefits, limitations, and accessibility of Open Source SDI. Contact Jacqueline Lowe at jdlowe@unca.edu for more information.

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Exploring Spatial Data Infrastructure in an Open Source World

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  1. Exploring Spatial Data Infrastructure in an Open Source World Jacqueline Lowe UNC-Asheville National Environmental Modeling and Analysis Center

  2. What is a SDI? • SDI is a collaborative framework for various aspects of geospatial data and tools. • Storage • Access • Metadata, • Querying, Display of spatial data • Access to spatial data services • Data integrity and organization • Reducing redundancy.

  3. Data Management • Cataloging / Organization • Data Discovery • Metadata • Keywords • Updating

  4. Data Storing • Create, maintain and store spatial data • Shapefiles, excel tables, databases (such as PostGIS), WMS layers

  5. Data Access • Different Users and different formats • Viewing, querying maps

  6. Demonstrating the Use and Concepts of a SDI • GeoNode • Free and Open Source! • Version 2.4 • Configured on Ubuntu operating system • Works with GeoServer and PostGIS • Other SDIs, such as GeoNetwork

  7. USE CASE EXAMPLE • Lots of data in different formats, vector and raster • Different scales including National, State, County • Different types of users, some proficient in GIS, others are not

  8. Uploading Layers to Catalog • Different data formats, raster, shapefile, other vector • Control over user permissions

  9. Styling Layers • Not quite as extensive as some other mapping programs (Desktop GIS). • Shapes, add labels, and adjust the look of the points based on attribute values and scale.

  10. Managing Metadata • Keywords are custom “tags” • Categories are based on metadata Standards • Both provide ways of standardizing the way data is accessed and organized

  11. Automated Publishing to GeoServer • You can now access and share WMS layers with Geoserver.

  12. PostGIS Database • Layers are automatically added to PostGIS database • Ability to connect GeoServer to other data sources as well.

  13. Viewing and Creating Maps in Mapviewer • In the Mapviewer, you can add multiple layers, (your own or selected) • Publish and save completed map • Access WMS

  14. Downloading Layers in Different Formats JPEG PNG Zipped Shapefile GML 2.0 EXCEL CSV KML GeoJSON KML TILES

  15. Uploading Documents • Includes PDFs, Spreadsheets, etc. • Documents can be linked to spatial data layers in GeoNode

  16. Some Things to Consider… • Benefits • Limitations • Accessibility • OPEN SOURCE

  17. Questions? Jacqueline Lowe jdlowe@unca.edu

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