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Geospatial Metadata and Spatial Data: It's all Greek to me!

Presented by Tony Mathys at a Current Issues and Applications of the Geospatial Technologies Lecture, Department of Geography and Environment, Aberdeen University, 24 February 2012

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Geospatial Metadata and Spatial Data: It's all Greek to me!

  1. 1. Geospatial Metadata and Spatial Data: It’s all Greek to me!
  2. 2. Programme PRESENTATION SESSION: Ø  Background information Ø  Metadata, standards and application profiles (ISO 19115, INSPIRE, UK GEMINI 2.1) Ø  UK Academic Geospatial Metadata Application Profile, Version 2.1 (UK AGMAP 2.1) and guidelines Ø  GoGeo portal and Geodoc Metadata Editor tool Ø  ShareGeo spatial data repositories REFRESHMENTS (15 minute break) HANDS-ON SESSION: Ø  Geodoc Metadata Editor tool, GoGeo portal and ShareGeo Open spatial data repository
  3. 3. Background Ø  three decades of GIS and spatial data capture technology Ø  considerable cost and time invested in spatial data creation Ø  an eclectic range of academic disciplines using GIS as a research and teaching tool Requires a spatial data management, discovery and sharing solution delivered through portal technology and metadata.
  4. 4. So what is METADATA? The word appears to be of Greek and Latin origin…… but metadata represents something completely different…… Photographic Images copyright: Jupiter Images 2006 µετά data Flickr copyright: By Sergio Calleja http://www.flickr.com/photos/scalleja/761037232/
  5. 5. Photographic Images copyright: Jupiter Images 2006 and it’s not sun and holiday
  6. 6. Represents a documented and ordered summary of information that describes something, in this case, spatial data. Provides information about the What, Where, When and Why of a spatial dataset. Includes its Ownership and Contact details and Access and Use conditions. Metadata (data describing data)
  7. 7. What are the ingredients? Where were ingredients produced? Who sells the ingredients? What are the brewing steps? When does the fermentation process end? Photographic Images copyright: Jupiter Images 2006 Think of metadata as a recipe for making beer.
  8. 8. metadata Photographic Images copyright: Jupiter Images 2006
  9. 9. Think of metadata as food product labelling. What are the ingredients? What is the nutritional value? How many calories? When is the product’s expiry date? Where was it produced? Who produced it?
  10. 10. metadata
  11. 11. Where are these datasets’ study areas? When were the data collected? Why were these datasets created? type of application? spatial reference system? spatial accuracy? processes or algorithms used? Who created these datasets? Can you tell me from any of these files….. Now think of metadata as spatial data labelling.
  12. 12. What do these polygons represent? What attribute information is associated with these polygons?
  13. 13. What do these SOILCLASS values mean? What does this attribute mean?
  14. 14. metadata
  15. 15. The importance of geospatial metadata Local spatial data management Metadata Record Spatial Dataset Repository Spatial Dataset Metadata Directory Ø  maintains an inventory of datasets to reduce time required to re-assess existing datasets for new and future applications; Ø  ensures integrity of existing and new datasets using metadata as a tracking mechanism to monitor changes and edits to datasets.
  16. 16. Ø  protects investments of time and cost dedicated to dataset creation and development; Ø  reduces and minimises the disruptive effects of staff taking annual leave or departing for new careers; Ø  eliminates or reduces the risk of redundancy in dataset collection; Ø  saves time against accidental deletion of dataset files; Ø  saves time against data loss as a result of hardware failure or damage to media. Protect data
  17. 17. Geoportal: an interface to run searches to discover metadata records representing spatial data and geo-services on the internet. Geoportal Metadata Record Spatial Datasets and Geo-services Spatial data discovery via a Geoportal
  18. 18. Free text, resource type, geographic location (co-ordinate and placename) and date searches.
  19. 19. Develop new applications
  20. 20. Contours Raster Map Draped 3D Model Create new spatial datasets © Crown Copyright/database right 2008 © Crown Copyright/database right 2008 © Crown Copyright/database right 2008
  21. 21. Discover Locate Access Use Publish Fit for purpose? Preserve Re-use data: steps to data immortality
  22. 22. Publish metadata on a geoportal Ø  a repository for you to store and manage your metadata thus savings in cost and time; Ø  use metadata to announce your data and applications; Ø  advertise (and sell?) your spatial datasets to other interested parties in academia and in the private and public sectors; and Ø  metadata in the portal can be referenced and cited for project proposals.
  23. 23. 1.  Intellectual Property Rights (IPR) 2.  residual licensed data rights for derived data 3.  concerns over data quality (data creator and user) 4.  liability fears 5.  trust 6.  privacy and security 7.  time and cost for data delivery 8.  data transformation and harmonisation (scale, positional accuracy projections, formats) 9.  legacy data 10.  time and cost to create anonymised data for release 11.  time and cost for metadata record (descriptive level) updates 12.  infrastructure performance, maintenance & enhancement costs 13.  data and software archiving and warehousing issues 14.  long-term commitment and investment in the infrastructure 15.  revisions to changes in standards 16.  confusion about standards compliance and which standard to use Many concerns remain (metadata and datasets)
  24. 24. Metadata standards Ø  Provide precise specifications to enforce and ensure consistency and interoperability. Ø  Define and describe metadata entities and elements and, classify and group relevant metadata elements with entities. Ø  Assign structure and conditions (obligations, data type, domain).
  25. 25. Dublin Core (ISO 15836) Dublin Core: 15 elements to facilitate simple resource discovery in a networked environment (e.g. internet or library). T Photographic Images copyright: Jupiter Images 2006 - Contributor - Title - Date - Description - Format - Identifier - Language - Publisher - Rights - Source - Subject - Relation - Coverage - Creator - Type
  26. 26. Geospatial metadata standards Federal Geographic Data Committee (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM) introduced in mid 1990s for documenting spatial datasets. Geospatial metadata standards are critical for supporting metadata creation and…………… ISO 19115 Metadata Standard for Geographic Information was ratified in 2003 and supersedes FGDC. ISO 19115 comprises more than 400 metadata elements. 22 core metadata elements.
  27. 27. Other Content Providers UK Location Programme Network Geo-data Gateway Local GoGeo database Geoportal portal interoperability and search capabilities across the internet. User
  28. 28. Centre for Ecology and Hydrology (CEH) National Environment Research Council (NERC) National Soil Resources Institute (NSRI)
  29. 29. Derived from a geospatial standard and represents a reduction of the number of entities and elements. * It should include the core (mandatory) element set of a standard to support interoperability across the wider geospatial community (Discoverable level metadata). * Include additional elements for Descriptive level metadata? * A profile can be extended to include elements which are best suited for a working group’s specific applications. Example: The Biological Data Profile (BDP) An approved profile with additional elements to document biological information such as taxonomy, methodology and analytical tools. http://www.flickr.com/photos/f10n4/186861991/ Geospatial Metadata Application Profiles
  30. 30. Creating application profiles from ISO 19115 ISO 19115 Metadata Standard ISO 19115 Core Element Set Application Profiles Academia (22 + 69= 91) Public Sector (22 + 43= 65) Private Sector (22 + 12= 34)400 elements 22 elements Environmental Sciences Specialised APs * INSPIRE Directive Metadata Guidelines. * UK GEMINI 2.1, an INSPIRE compliant geospatial metadata standard for the UK geographical information community. * Marine Environmental Data & Information Network (MEDIN) Metadata Profile. * UK Academic Geospatial Metadata Application Profile 2.1 (UK AGMAP) Archaeology Biological Sciences Geological Sciences History Health Informatics
  31. 31. Infrastructure for Spatial Information in the European Community (INSPIRE) *European Commission (EC) *European Environment Agency (EEA) *Representatives from Member States (Mapping/GIS) INSPIRE Directive Metadata Guidelines
  32. 32. INSPIRE Directive [2007 /2/ EC] Ø  Targets electronic spatial data and services for environmental information. Ø  Aims to create a European Spatial Data Infrastructure (SDI) based on Member States’ infrastructures, to improve interoperability of spatial information. Ø  Data and services to be delivered through European initiatives. Ø  INSPIRE Regulations came into force on 31 December 2009 and applies to England, Northern Ireland and Wales. Ø  Scotland’s Parliament enacted a complementary regulation on the same date. Ø  Public authorities obliged to produce and keep ‘metadata’ current for describing datasets, dataset series and geo-services. Ø  Includes UK academia (Freedom of Information Act, 2000).
  33. 33. Ø  Provide metadata catalogues to reveal what information is available. Ø  Provide online data discovery, view, download and transformation (interoperability) services. Ø  Licensing arrangements to allow for information sharing, access and use in accordance with each State’s regulations. Ø  Set up e-commerce arrangements where charging is applicable. Ø  Introduce monitoring mechanisms to show that information is being made available. Ø  Introduce co-ordination mechanisms to ensure effective operation of the infrastructure. Ø  Comply with the 34 spatial data specifications in three annexes (reference geographies, environmental datasets). INSPIRE Regulations for member states
  34. 34. INSPIRE spatial data themes and deadlines for creating metadata
  35. 35. Practical example from Defra: poultry disease outbreak
  36. 36. INSPIRE Geoportal and Metadata Editor
  37. 37. * First released in 2004 to support creation of ISO 19115 and e-GMS compliant metadata - supersedes the National Geospatial Data Framework (NGDF) * Targeting the UK public sector (43 elements) * 2010: UK Location Programme (UKLP) revised UK GEMINI 2.1 to meet the requirements of the EU INSPIRE Directive. UK GEMINI UK Location Programme (UKLP) is a pan-government collaborative initiative with the responsibility to develop and implement the INSPIRE Directive 2007/2/EC and the UK Location Strategy.
  38. 38. UK Location Metadata Catalogue and Editor
  39. 39. Scottish SDI Discovery Metadata Catalogue
  40. 40. MEDIN Data Discovery Portal and Metadata tools
  41. 41. UK Academic Geospatial Metadata Application Profile, Version 2.1 (UK AGMAP 2.1) UK AGMAP 2.1 created to support the specific needs of the UK H&FE communities. Comprises elements from ISO 19115, UK GEMINI 2.1 and INSPIRE (91 elements). Supports documentation of a dataset, dataset series or geo-service (discoverable and descriptive levels). AGMAP elements mapped to Dublin Core, FGDC, INSPIRE, UK GEMINI 2.1 and DDI elements.
  42. 42. A simple interface designed for UK academia to run queries to discover metadata for spatial datasets, and to locate geographic resources. GoGeo enables searching by the use of various options including GoGeo Portal free text map type geographical location date
  43. 43. GeoNetwork (http://geonetwork-opensource.org/) GeoNetwork: A standard’s (ISO 19115) based, free and open source catalogue application to manage spatially referenced resources through the web. Provides metadata editing and search functions as well as an embedded interactive web map viewer.
  44. 44. Most spatial data information is stored in our heads. We need to move it from there to an electronic file. Metadata Creation Photographic Images copyright: Jupiter Images 2006
  45. 45. mind reading aliens? Solutions? Photographic Images copyright: Planet Vulcan Images, 2606
  46. 46. metadata extraction devices?
  47. 47. Geodoc Metadata Editor Tool
  48. 48. Geodoc design and functionality * Java-built online tool * UK federation authentication access * validation (red fields and status bars) * text fields * drop-down lists
  49. 49. Geodoc co-ordinate extent tool Map tool captures co-ordinate values for bounding box elements used to define the extent of a dataset’s study area.
  50. 50. 1) collect and process data to create dataset; 2) document dataset to create a metadata record; 3) validate and submit record for review; 4) metadata creator is contacted; and 5) record is published on the GoGeo portal. 1 2 3 Easy steps to the creation and publication of a geospatial metadata record Photographic Images copyright: Jupiter Images 2006 4 5
  51. 51. ShareGeo Open Ø  A repository for the deposit and extraction of spatial data. Ø  Supports open and free access to spatial data. Ø  Holds national and international spatial datasets (171) (raster, vector and tabular). Ø  Key to delivering a Spatial Data Infrastructure (SDI) for the UK academic GI community. Ø  ArcGIS plugin to create metadata to deposit with data.
  52. 52. ShareGeo Digimap Solution for spatial data derived from licensed (OS) data.
  53. 53. -UK AGMAP 2.1 -Guidelines -Geodoc metadata tool -GoGeo portal nodes -Workshops -eLearning objects Geography Archaeology Geological Sciences Biological Sciences Research Resources to support local spatial data management in academia
  54. 54. UK AGMAP 2 Guidelines Geodoc tadata tool Customised GoGeo Portal Nodes Training Geography Archaeology Geological Sciences Biological Sciences University A UK AGMAP 2 Guidelines Geodoc metadata tool Customised GoGeo Portal Nodes Training Geography Archaeology Geological Sciences Biological Sciences University B UK AGMAP 2 Guidelines Geodoc metadata tool Customised GoGeo Portal Nodes Training Geography Archaeology Geological Sciences Biological Sciences University C UK AGMAP 2 Guidelines Geodoc metadata tool Customised GoGeo Portal Nodes Training Geography Archaeology Geological Sciences Biological Sciences University D Spatial Data Infrastructure (SDI) for academia Other resources and portals Spatial Data Repository Spatial data Metadata Search Data user Metadata

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Presented by Tony Mathys at a Current Issues and Applications of the Geospatial Technologies Lecture, Department of Geography and Environment, Aberdeen University, 24 February 2012

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