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Metadata made Simple

Metadata made Simple. Introduction. Just as a work of art can change hands many times, so can geospatial data. Once created data can travel through a network and be used for a number of different kinds of spatial analysis.

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Metadata made Simple

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  1. Metadata made Simple LICJ Monthly Meeting - May, 2002

  2. Introduction • Just as a work of art can change hands many times, so can geospatial data. • Once created data can travel through a network and be used for a number of different kinds of spatial analysis. • Metadata or “data about data” describes the origins of and track the changes to geospatial data LICJ Monthly Meeting - May, 2002

  3. Metadata Defined • Metadata are simply that type of descriptive information applied to a digital geospatial file. • A common set of terms and definitions used when documenting geospatial data LICJ Monthly Meeting - May, 2002

  4. Metadata Defined • Metadata are intended to answer some general data questions: • What does the dataset describe? • Who produced the dataset? • Why was the dataset created? • How was the dataset created? • How reliable are the data;what problems remain in the dataset • How can someone get a copy of the dataset? LICJ Monthly Meeting - May, 2002

  5. Why bother with Metadata? • They serve as a lingua franca • Helps people find the data they need and determine how best to use it • Benefit the data producing organization – • Personnel change • Lack of knowledge can lead to duplication • It can be made available through clearinghouses LICJ Monthly Meeting - May, 2002

  6. The Major Uses of Metadata • To help organize and maintain an organizations internal investment in spatial data, • To provide information about an organization’s data holdings to data catalogues & clearinghouses • To provide information to process and interpret data received through a transfer from an external source. LICJ Monthly Meeting - May, 2002

  7. The Standard • Provides a common set of terminology and definitions for the documentation of geospatial data • Provides a methodology and process for data producers/users to extend their metadata beyond the base standard • Does not • specify how the information is organized in a computer system • Specify the means by which the information is transmitted to the user LICJ Monthly Meeting - May, 2002

  8. Current Metadata Standards • Spatial Data Transfer Standard (SDTS) • - created to facilitate data transfer across network • Content Standards for Digital Geospatial Metadata (referred to as the FDGC Standard) – created for federal agencies • FGDC actively involved in the ISO Technical Committee in developing an International Metadata Standard LICJ Monthly Meeting - May, 2002

  9. Metadata Core Elements • Identification – basic information about the data set. • Data Quality – an assessment of the quality of the dataset • Spatial Data Organization – the mechanism used to represent spatial information in the dataset • Spatial Reference – description of the reference frame for, and means of encoding, coordinates LICJ Monthly Meeting - May, 2002

  10. Metadata Core Elements cont.. • Entity and Attribute – information about theh content of the data set • Distribution Information – information about obtaining the data set. • Metadata Reference Information – information on the currentness of the metadata information and the responsible party LICJ Monthly Meeting - May, 2002

  11. Metadata Tools • Objectives of Metadata Tools: • Document digital geospatial data and create some metadata for it that preserves the value of the data for your agency • Make the metadata compliant with a recognized metadata standard LICJ Monthly Meeting - May, 2002

  12. Metadata Tools • Spatial Metadata Management System (SMMS) • TK Metadata Editor • X Toolkit Metadata Editor • ArcCatalog • FGDCMETA (AML) • Corpsmet95 • Metamaker • http://badger.state.wi.us/agencies/wlib/sco/metatool/toolchoz.htm LICJ Monthly Meeting - May, 2002

  13. Which Tool is the one for You • Stability • An OS/interface you are comfortable with • No restrictions on length of free text fields • An output that allows compliance with standards • Time Saving features • Convenience features’ • Ability to import/export LICJ Monthly Meeting - May, 2002

  14. Metadata Resources Federal Geographic Data Committee (FGDC) FGDC Home Page: http://www.fgdc.gov/ FGDC Clearinghouse Home Page: http://www.fgdc.gov/clearinghouse/ National Geospatial Data Clearinghouse: http://fgdclearhs.er.usgs.gov/ National States Geographic Information Council (NSGIC) NSGIC Home Page: http://www.geo.drake.edu/nsgic/ NSGIC Metadata Primer: http://www.lic.wisc.edu/metadata/metaprim.htm LICJ Monthly Meeting - May, 2002

  15. THE END LICJ Monthly Meeting - May, 2002

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