Introduction to Geospatial Metadata – ISO 191** Metadata National Coastal Data Development Center...
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Transcript of Introduction to Geospatial Metadata – ISO 191** Metadata National Coastal Data Development Center...
Introduction to Geospatial Metadata – ISO 191** Metadata
National Coastal Data Development Center
A division of the National Oceanographic Data Center
Please email a list of participants at each location to
Also Email questions for the Q&A session to [email protected]
• Series Materials• ftp://ftp.ncddc.noaa.gov/pub/
Metadata/Online_ISO_Training/
NOAA EDM Wiki ( )https://geo-ide.noaa.gov/wiki/
index.php?title=Main _Page
Workbooks http://www.ncddc.noaa.gov/metadata-standards/
ISO Resources
• Why ISO Metadata
• What is ISO Metadata
• General Overview of ISO Content and Organization
Why ISO Metadata?
Executive Order 12906
• Established the National Spatial Data Infrastructure (NSDI) to support public and private sector applications of geospatial data
• Established an electronic National Geospatial Data Clearinghouse for the NSDI to address data standardization, make geospatial data publicly available, and address redundancy and incompatibility of geospatial information
OMB Circular A-16
• Provides guidance for federal agencies that create, maintain or use spatial data directly or indirectly through the establishment of the National Spatial Data Infrastructure (NSDI) and the Federal Geographic Data Committee (FGDC)
• Establishes guidelines for the management of digital spatial data and the use of those assets. It also appoints the FGDC to the interagency coordinating body for NSDI-related activities
FGDC Endorsed Standards
What is ISO Metadata?
ISO Geospatial Metadata• ISO – International Organization for Standardization
• Use the 191** series– ISO 19115:2003/Cor 1:2006 Geographic information --
Metadata– ISO 19115-2:2009 Geographic information -- Metadata
-- Part 2: Extensions for imagery and gridded data– ISO/TS 19139:2007 Geographic information --
Metadata -- XML schema implementation – ISO 19110:2005/Amd 1:2011 Geographic information --
Methodology for feature cataloguing– ISO 19119:2005/Amd 1:2008 Geographic information --
Services Extensions of the service metadata model
ISO 19115 → Core InformationISO 19115-2 → Extensions for Instrumentation and Gridded Data
ISO 19110 → Entities and AttributesISO 19119 → Services
ISO 19157 → Data Quality
19139XML schema implementation
19115-2 Part 2: gridded data and
imagery
19115Geographic information –
Metadata
19110
MI_
MD_
FC_
19119Services
SV_19157
Understanding ISO Standards
DQ_
19111
ISO Metadata
• Is flexible• Depicts relationships between datasets
and collection level (parent/child relationships)
• Standardizes descriptors through the use of codelists
• Accommodates new technologies (such as documenting services)
• Accommodates International scope• Undergoes revision/review in 5 year cycles
ISO 19115:2003(E)
Whocollected the data?processed the data?wrote the metadata?to contact for questions?to contact to order?owns the data?
Whocollected the data?processed the data?wrote the metadata?to contact for questions?to contact to order?owns the data?
Wherewere the data collected?were the data processed?are the data located?
Wherewere the data collected?were the data processed?are the data located?
Whatare the data about?project were they collected under?are the constraints on their use?is the quality?are appropriate uses?parameters were measured?format are the data in?
Whatare the data about?project were they collected under?are the constraints on their use?is the quality?are appropriate uses?parameters were measured?format are the data in?
Whenwere the data collected?were the data processed?
Whenwere the data collected?were the data processed?
Howwere the data collected?were the data processed?do I access the data?do I order the data?much do the data cost?was the quality assessed?
Howwere the data collected?were the data processed?do I access the data?do I order the data?much do the data cost?was the quality assessed?
Whywere the data collected?
Whywere the data collected?
Metadata written using ISO still answers these important
questions:
Metadata written using ISO still answers these important
questions:
ISO ContentISO Content
Organization and Content of ISO
• ISO is organized in Sections and Packages• Section: Groupings of similar
information
• Package: Logical groupings of elements found in multiple locations within Sections
Main Sections of ISO MetadataMetadata Information (MD_Metadata)
Root element that contains information about the metadata itself. Root contains main sections.
Spatial Representation Information (gmd:spatialRepresentationInfo) geospatial representation of a resource
Reference System Information (gmd:referenceSystemInfo)
spatial and temporal reference systems used in the resource
Metadata Extension Information (gmd:metadataExtensionInfo)
user specified extensions to the metadata standard used to describe the resource
Identification Information (gmd:identificationInfo)
uniquely identify a resource or resources
Content Information (gmd:contentInfo)
physical parameters and other attributes contained in a resource
Distribution Information (gmd:distributionInfo) who makes a resource available and how to get it
Data Quality Information (gmd:dataQualityInfo)
quality and lineage (including processing steps and sources) of a resource
Portrayal Catalogue Information (gmd:portrayalCatalogueInfo)
collection of defined symbols used to depict, to humans, features on a map
Metadata Constraint Information (gmd:metadataConstraints)
constraints on the use of the metadata and the resource it describes
Application Schema Information (gmd:applicationSchemaInfo) application schema used to build a dataset
Metadata Maintenance Information (gmd:metadataMaintenance)
maintenance of the metadata and the resource it describes
Main Sections of ISO MetadataMetadata Information (MI_Metadata)
Root element that contains information about the metadata itself. Root contains main sections.
Spatial Representation Information (gmd:spatailRepresentationInfo)
geospatial representation of a resource
Reference System Information (gmd:referenceSystemInfo)
spatial and temporal reference systems used in the resource
Metadata Extension Information (gmd:metadataExtensionInfo)
user specified extensions to the metadata standard used to describe the resource
Identification Information (gmd:identificationInfo)
uniquely identify a resource or resources
Content Information (gmd:contentInfo)
physical parameters and other attributes contained in a resource
Distribution Information (gmd:distributionInfo)
who makes a resource available and how to get it
Data Quality Information (gmd:dataQualityInfo)
quality and lineage (including processing steps and sources) of a resource
Portrayal Catalogue Information (gmd:portrayalCatalogueInfo)
portrayal catalogues used for the resource
Metadata Constraint Information (gmd:metadataConstraints)
constraints on the use of the metadata and the resource it describes
Application Schema Information (gmd:applicationSchemaInfo)
application schema used to build a dataset
Metadata Maintenance Information (gmd:metadataMaintenance)
maintenance of the metadata and the resource it describes
Acquisition Information (gmi:acquisitionInformation)
instruments, platforms, operations and other info of data acquisition (only MI_Metadata)
Package Abbreviations
CI Citation
DQ Data Quality
DS Dataset
EX Extent
FC Feature Catalogue
GM Geometry
LE Lineage Extended (added in ISO 19115-2)
LI Lineage
MD Metadata
MI Metadata for Imagery (added in ISO 19115-2 and replace the root MD)
RS Reference System
QE Data Quality Extended
Guide to Implementing ISO Metadatahttp://www.ncddc.noaa.gov/
metadata-standards/
• parallels the standard
• provides FAQs
• implementation guide
Workbook of ISO 19115
• is a resource for applying the ISO
metadata standard
• provides names and definitions
• describes domain values (valid values that can be assigned to the data element)
• uses a Graphical Representation of the Production Rules
• is a resource for applying the ISO
metadata standard
• provides names and definitions
• describes domain values (valid values that can be assigned to the data element)
• uses a Graphical Representation of the Production Rules
Using the Workbook
Tag: XML tagDefinition: definition of the tagType: type or packageDomain: format of the contentMultiplicity: if something is repeatable and if it is requiredAttributes: XML attributesBest Practices: recommended implementation
Tag: XML tagDefinition: definition of the tagType: type or packageDomain: format of the contentMultiplicity: if something is repeatable and if it is requiredAttributes: XML attributesBest Practices: recommended implementation
fileIdentifier – A unique phrase or string that uniquely identifies the metadata file.
Type: gco:characterStringDomain: free textMultiplicity: optional *this is NAP requirement*Attributes: nilReasonBest Practices: Each metadata record shall have a universal unique identifier (UUID) to distinguish it from others.
Using the Workbook
Using the Graphics
What is ISO Metadata?Email questions to [email protected]