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Exploring Spatial Data Infrastructure in an Open Source World

Exploring Spatial Data Infrastructure in an Open Source World. Jacqueline Lowe UNC-Asheville National Environmental Modeling and Analysis Center. What is a SDI?. SDI is a collaborative framework for various aspects of geospatial data and tools. Storage Access M etadata,

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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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