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Geo Package and OWS Context at FOSS4G PDX
The document provides an update on the new Open Geospatial Consortium (OGC) standards for GeoPackage and OWS context, detailing various geospatial data sharing methods and their limitations. It discusses the features of GeoPackage, including support for vector and raster data, and introduces the concept of context documents for sharing geospatial information in web services. The document concludes with an invitation for collaboration on advancing tests and reference implementations related to these specifications.
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Geo Package and OWS Context at FOSS4G PDX
- 1. Update on NewOGC Standards GeoPackage and OWS Context Luis Bermudez Director Compliance Program OGC FOSS4G, Portland, Sept 10, 2014 © 2014 Open Geospatial Consortium
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- 3. How do youshare Geospatial data?
- 4. ShapeFiles? MyShapeFile.shp MyShapeFile.shx MyShapeFile.dbf Simple! Since 1990 But … ! size max 2 GB ! multiple files ! no topological information ! field names max 10 character limit ! one kind of geometry per layer
- 5. FileGDB? • Specificproprietary technology • Reverse Engineer efforts https://github.com/rouault/dump_gdbtable/wiki/FGDB-Spec
- 6. <KML> ? Isa visualization encoding ! For viewing purposes ! A file with more than 15 mb can cause problems …
- 7. Maybe others… CSV Empire State Building NY NY,3,Long lines! Washington Square Park NY NY,4,Beautiful fountains! 127 W. 28th Street NY NY,2,Nice brownstone! 75 Washington Place NY NY,2,Short walk from park! Statue of Liberty NY NY,1,Inspirational Spreadsheets
- 8. What do wewant? http://www.spatiallyadjusted.com/2012/12/20/ogc-draft-geopackage-specification/
- 10. SQLite: Small, Fast,Reliable
- 11. SQLite: Small, Fast,Reliable http://www.sqlite.org
- 12. Max Size of Geopackage File http://www.sqlite.org/limits.html
- 13. Vectors as SimpleFeatures SQL http://www.opengeospatial.org/resource/products/stats
- 14. Vectors as SimpleFeatures SQL http://www.opengeospatial.org/resource/products/stats
- 15. Vectors as SimpleFeatures SQL http://www.opengeospatial.org/resource/products/stats Widely implemented!
- 16. Vectors as SimpleFeatures SQL ISO 19125-2:2004 Geographic information -- Simple feature access -- Part 2: SQL option ISO 19125-1:2004 Geographic information -- Simple feature access -- Part 1: Common architecture
- 17. Vectors as SimpleFeatures SQL ISO 19125-2:2004 Geographic information -- Simple feature access -- Part 2: SQL option ISO 19125-1:2004 Geographic information -- Simple feature access -- Part 1: Common architecture Widely recognized!
- 18. Vectors as SimpleFeatures From Simple Feature Access - SQL (SFS)
- 19. Vectors as SimpleFeatures From Simple Feature Access - SQL (SFS)
- 20. Vectors as SimpleFeatures Well Known Binary (WKB) Geometries encoded in ! Binary Large Objects (BLOBs)!
- 21. Vectors as SimpleFeatures Linear 2D Geometries with optional elevation and measure values ! XY XYZ XYM XYZM
- 22. Simple Features inTables 1 geometry column per table R*Tree indexes
- 23. Support for Rasters/Tiles • Data model was implemented based on MBTiles Specification. • One file can store multiple raster and tile pyramid data sets in different tables or views.
- 24. zoom level zoomlevel Coarser resolution Array of tiles ! for second level More detailed resolution
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- 29. The OGC Process Where is the living place of the document?
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- 34. The OGC Process Abstract Tests
- 35. The OGC Process Abstract Tests Executable Test
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- 37. Free Self TestingFacility http://cite.opengeospatial.org/teamengine/
- 38. The OGC Process Where is the executable test suite?
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- 41. More on Directions Magazine Webinar http://vimeo.com/88285579
- 42. Document Link VersionDocument Title Number Type 1.0 OGC® GeoPackage Encoding Standard 12-128r10 IS
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- 44. How do youeasily share what you are viewing in your client, your annotations, cool layers you have put together?
- 45. Multiple Layers fromdifferent WMSs
- 46. Map with GMLAnnotations
- 47. Map with SVGannotation
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- 50. WMTS Service WCS Service WPS Service GML Geospatial file
- 51. WMTS Service WCS Service WPS Service GML Geospatial file
- 52. WMTS Service WCS Service WPS Service GML Geospatial file
- 53. WMTS Service “hey,I have all the WCS Service WPS Service GML Geospatial file data and have annotated the hurricane track. I will send you a … of the operational picture”
- 54. OWS Context Document WMTS Service WCS Service WPS Service GML Geospatial file <href> <href> <href>
- 55. OWS Context Document WMTS Service WCS Service WPS Service GML Geospatial file <href> <href> <href>
- 56. OWS Context inan atom feed … … … http://www.creaf.uab.es/hurricane-tomas.xml …
- 57. Works With GoogleMaps https://maps.google.es/maps?q=http:%2F%2Fwww.creaf.uab.es%2Fhurricane-tomas.xml
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- 59. Anatomy of acontext document • Extends the Atom XML format! • Contains Atom <entries> which have OGC <offering>s. • Offerings are data sources: • Services (e.g. WMS, WFS, WMTS and WCS) • File-based data sets (e.g like GML, KML and PDF). • File-based data sets may be specified by reference with a URL, or included inline.
- 60. Anatomy of acontext document • OGC service offerings contain a GetCapabilites request and a request to get data, such as GetMap, GetTiles, GetFeature, etc. • Offerings do not have to be spatial, so clients implementing Context should handle non-spatial offerings in a way other than mapping them.
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- 63. Document Links VerDocument Title # Type 1.0 OGC OWS Context Conceptual Model ! 12-080r2 IS 1.0 OGC OWS Context Atom Encoding Standard 12-084r2 IS OGC® OWS-10 Rules for JSON and GeoJSON Adoption: Focus on OWS-Context 14-009r1 PER
- 64. Final Thoughts •Let me know if you are interested in: • advancing tests • implementing reference implementations • contributing to the specs! • any other idea Luis Bermudez! lbermudez@opengeospatial.org Twitter @berdez