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Introduction to Metadata

Introduction to Metadata. Lynda Wayne GeoMaxim / FGDC. Introductions. Name Organization Metadata Experience Workshop Expectations. Objectives. After the workshop, students can: develop a metadata template that uses a range of mandatory, conditional, & optional CSDGM elements

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Introduction to Metadata

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  1. Introduction to Metadata Lynda Wayne GeoMaxim / FGDC FGDC CAP Kickoff Meeting Denver, CO September 28-29, 2004

  2. Introductions • Name • Organization • Metadata Experience • Workshop Expectations

  3. Objectives After the workshop, students can: • develop a metadata template that uses a range of mandatory, conditional, & optional CSDGM elements • effectively read and comprehend metadata • make the business case for metadata • discriminate between minimal and quality metadata • locate and access online resources

  4. What IS Metadata? Data ‘reporting’ • WHO created the data? • WHAT is the content of the data? • WHEN was it created? • WHERE is it geographically? • HOW was the data developed? • WHY was the data developed?

  5. What IS Metadata? title supplemental information abstract time period author sources (file) size

  6. What IS Metadata? entity attributes view actual metadata record

  7. Let’s Make Metadata Turn to your neighbor and document the following: • Title (name) • Theme Keywords (work, play, life) • Supplemental Information

  8. Value of Metadata Preserves investments in geospatial data development people forget…………..people move on

  9. Value of Metadata Serves as a valuable resource to data use and analysis What scale is the source photography? Which variables were selected for processing? What other 'hydro' data do we have?

  10. Value of Metadata Provides data consumers & stewards: • a common language • a context for data resources • needed information about the data Albers, I think? Yes I’ll have get back to you… Projection? Attributes? Time Period?

  11. Value of Metadata Supports data management • maintenance and update • project status • value assessment / cba • project estimates • deliverable and performance measures

  12. Value of Metadata

  13. Who creates metadata? Officially • Federal organizations producing digital geospatial data • Federally funded projects that produce digital geospatial data Morally and practically • Anybody that creates digital data It’s the right thing to do!

  14. Why metadata? Be a part of the BIG picture • Federal Geographic Data Committee (FGDC) - coordinates national geospatial data development • National Spatial Data Infrastructure (NSDI) - creation and distribution of seamless national geospatial data • Global Spatial Data Infrastructure (GSDI) - creation and distribution of seamless global geospatial data

  15. Why metadata? National Spatial Data Infrastructure Old perspective…………………. ……………………………….New perspective DLG

  16. Elevation and Bathymetry • Hydrography • Geodetic Control • Cadastral • Transportation • Governmental Units • Orthoimagery Why metadata? NSDI Framework Data - cooperatively-designed data dictionaries for seven key ‘reference’ themes

  17. Why metadata? NSDI Geospatial Data Clearinghouse - international network of metadata distribution ‘nodes’ user internet Clearinghouse nodes international GINA AGDC ASGDC Anchorage • FGDC • EROS • ESRI • NRCS • NOAA CSC • ALASKA GDC query available metadata records state / local national

  18. Why metadata? NSDI Geospatial One Stop • metadata and links to data • webmapping services • data acquisition plans • data category communities …..fast tracking the NSDI

  19. National Map Geospatial One-stop data national • state • local • private metadata • services • community access policies • standards • partnerships coordination FGDC Why Metadata?

  20. How Do I Create Metadata? the metadata gospel… • It’s not pretty • It’s not easy • But sure is thorough….. Content Standard for Digital Geospatial Metadata C S D G M I S O

  21. CSDGM • Identification Information General bibliographic information including: • title, originator, data contact, status, date, time period of content, abstract, purpose, keywords, geographic location • Data Quality Information Lineage and data assessments • sources, process methods, accuracy, data processing contact

  22. CSDGM 3. Spatial Data Organization Data format: • vector, point, raster 4. Spatial Reference Information Coordinate system parameters: • horizontal / vertical coordinate system, projection, datum

  23. CSDGM 5. Entity and Attribute Information Database design • entities, attributes, domains, description of data values 6. Distribution Information How to acquire the data • distribution contact, available formats, online distribution website, costs

  24. CSDGM • Metadata Reference Information General information about the metadata record itself • metadata contact, metadata standard used, metadata creation date, metadata review date

  25. CSDGM Elements

  26. CSDGM Elements

  27. CSDGM Elements

  28. CSDGM Elements Turn to page 35 in the Green Book

  29. CSDGM Elements

  30. CSDGM Elements Calendar Dates YYYYMMDD Time of Day HHMMSSSS Coordinates Lat/Lon Decimal Degrees Network addresses & file names Service://hostname:port/path/filename

  31. CSDGM Production Rules

  32. CSDGM Production Rules

  33. CSDGM Production Rules

  34. CSDGM Production Rules

  35. CSDGM Production Rules

  36. CSDGM

  37. CSDGM Section One: Identification Elements you use to ‘shop’ for a data set of interest: WHO ? title, originator, publication date WHAT ? abstract, keywords, native data set (software) environment WHERE ? geographic extent (mbr), browse graphic WHEN ? time period of content Availability? access/use constraints, status

  38. CSDGM

  39. CSDGM Section Two: Data Quality How was the data set developed? • Source Information • Data processing What checks were made of the data set? • Logical Consistency • Positional Accuracy • Attribute Accuracy

  40. CSDGM

  41. CSDGM Section Three: Spatial Data Organization Point, Line, or Vector?

  42. CSDGM

  43. CSDGM Section Four: Spatial Reference Information Coordinate System

  44. CSDGM

  45. CSDGM Section Five: Entity & Attribute Information Database Description

  46. CSDGM

  47. CSDGM Section Six: Distribution Information How can I get the data set? • Distribution Contact Information • Available Formats (digital and hardcopy) • Standard and Custom Order Processes • Online option • Offline media • Distribution Liability • Fees

  48. CSDGM

  49. CSDGM Section Seven: Metadata Information Elements that describe the metadata record itself: WHO wrote the metadata record WHAT metadata standard was used? WHEN was the metadata created/updated? Is the metadata available? metadata access and use constraints

  50. CSDGM

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