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Introduction to Metadata
Lynda Wayne GeoMaxim / FGDC FGDC CAP Kickoff Meeting Denver, CO September 28-29, 2004
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Introductions Name Organization Metadata Experience
Workshop Expectations (Lynda - Introduction to Metadata)
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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 (Lynda - Introduction to Metadata)
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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? (Lynda - Introduction to Metadata)
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What IS Metadata? title supplemental information abstract time period
title supplemental information abstract time period author sources (file) size (Lynda - Introduction to Metadata)
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What IS Metadata? entity attributes view actual metadata record
(Lynda - Introduction to Metadata) view actual metadata record
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Let’s Make Metadata Turn to your neighbor and document the following:
Title (name) Theme Keywords (work, play, life) Supplemental Information (Lynda - Introduction to Metadata)
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Value of Metadata Preserves investments in geospatial data development
people forget…………..people move on (Lynda - Introduction to Metadata)
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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? (Lynda - Introduction to Metadata) What other 'hydro' data do we have?
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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? (Lynda - Introduction to Metadata)
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Value of Metadata Supports data management maintenance and update
project status value assessment / cba project estimates deliverable and performance measures (Lynda - Introduction to Metadata)
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Value of Metadata (Lynda - Introduction to Metadata)
1) Ask participants what they DO know about the data set 2) Ask participants what needed information they DON”T know about the data set
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Who creates metadata? Officially Morally and practically
Federal organizations producing digital geospatial data Federally funded projects that produce digital geospatial data Morally and practically Anybody that creates digital data (Lynda - Introduction to Metadata) It’s the right thing to do!
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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 Lynda - Intro to Meta
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Why metadata? National Spatial Data Infrastructure
Old perspective…………………. ……………………………….New perspective DLG (Nina to revise / remove)
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Elevation and Bathymetry
Why metadata? NSDI Framework Data - cooperatively-designed data dictionaries for seven key ‘reference’ themes Elevation and Bathymetry Hydrography Geodetic Control Cadastral Transportation Governmental Units Orthoimagery (Nina to revise / remove)
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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
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Why metadata? NSDI Geospatial One Stop metadata and links to data
webmapping services data acquisition plans data category communities …..fast tracking the NSDI
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Why Metadata? FGDC Geospatial One-stop National Map data access
coordination national • state • local • private metadata • services • community policies • standards • partnerships
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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 (Lynda - CSDGM Overview)
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CSDGM Identification Information Data Quality 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 (Lynda - CSDGM Overview)
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CSDGM 3. Spatial Data Organization 4. Spatial Reference Information
Data format: vector, point, raster 4. Spatial Reference Information Coordinate system parameters: horizontal / vertical coordinate system, projection, datum (Lynda - CSDGM Overview)
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CSDGM 5. Entity and Attribute Information 6. Distribution 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 (Lynda - CSDGM Overview)
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CSDGM Metadata Reference Information
General information about the metadata record itself metadata contact, metadata standard used, metadata creation date, metadata review date (Lynda - CSDGM Overview)
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CSDGM Elements
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CSDGM Elements
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CSDGM Elements
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CSDGM Elements Turn to page in the Green Book
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CSDGM Elements
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CSDGM Elements Calendar Dates Time of Day Coordinates
YYYYMMDD Time of Day HHMMSSSS Coordinates Lat/Lon Decimal Degrees Network addresses & file names Service://hostname:port/path/filename
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CSDGM Production Rules
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CSDGM Production Rules
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CSDGM Production Rules
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CSDGM Production Rules
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CSDGM Production Rules
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CSDGM
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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
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CSDGM
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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
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CSDGM
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CSDGM Section Three: Spatial Data Organization Point, Line, or Vector?
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CSDGM
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CSDGM Section Four: Spatial Reference Information Coordinate System
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CSDGM
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CSDGM Database Description
Section Five: Entity & Attribute Information Database Description
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CSDGM
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How can I get the data set?
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
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CSDGM
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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
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CSDGM
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CSDGM Supporting Sections Eight: Citation Information
Title, Originator, Publisher Nine: Time Period Information Date and Hour Ten: Contact Information Name, Job Title, Address, Phone,
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CSDGM
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Metadata Collection Tools
Shareware corpsmet - USACE tkme / xtme - USGS/FGDC NPSmeta (ArcCatalog Extension) MetaD - ISO (Lynda - Metadata Tool Review)
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Metadata Collection Tools
GIS Internal ESRI ArcCatalog Intergraph SMMS for Geomedia (Lynda - Metadata Tool Review)
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Metadata Collection Tools
Software Commercial SMMS Data Logger Blue Marble (Lynda - Metadata Tool Review)
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Metadata Collection Tools
Forms hardcopy or online Project Logbook manager tech IT analyst (Lynda - Metadata Tool Review) Note: there is a hyperlink embedded to Nina’s logbook2.ppt Logbook2.ppt to be printed as handout
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Metadata Validation Tools
mp - Metadata Parser Checks for CSDGM syntax Element names Mandatory elements Element content (domains and logical consistency) Embeds tags for NSDI Clearinghouse Distribution cns – Chew ‘N Spit Rectifies indentation Inserts capitalization and underbars FGDC ‘compliant’ metadata must pass mp! (Lynda - Metadata Tool Review)
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Metadata Resources: The Greenbook
An easy to use guide to implementing the CSDGM (is not the standard itself) Background and Descriptive Information CSDGM history, value of meta, formats CSDGM Elements definitions, domains, FAQs, common values Sample Metadata NWI and DGL Glossary of Terms (Lynda - Metadata Tool Review)
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Metadata Resources: Online Resources
tutorials metadata guidance websites software publications thesauri sources (Lynda - Metadata Tool Review)
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Making Metadata Part of the Process
New tools enable us to better integrate metadata creation into the data development process data development (Lynda - Making Metadata Part of the Process) metadata
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Making Metadata Part of the Process
If metadata were collected throughout the data process… more accurate (no guessing) more details better decision-making. metadata
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Making Metadata Part of the Process
But what can I do to better incorporate metadata into the data development process? (Lynda - Making Metadata Part of the Process)
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step one: build adminstrative support
Make the business case: preserve data investments limit data liability manage data resources find new data resources easier data transfer more efficient data distribution (Lynda - Making Metadata Part of the Process)
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step two: build technical support
Emphasize individual benefits: reduce workload..in the long term field fewer data inquiries document personal contributions (Lynda - Making Metadata Part of the Process)
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step two: build technical support
Support your staff include in job descriptions & performance measures provide staff support tools training (Lynda - Making Metadata Part of the Process)
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step three: create organizational templates
For each common data type: identify pertinent fields populate fixed fields standardized language distribution methods standards used build source and contact libraries (Lynda - Making Metadata Part of the Process)
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step four: distribute the effort
map fields to the work flow establish and assign responsibilities technicians - lineage analyst - process methodology field scientists - accuracy assessments IT managers - tools, collection, management (Lynda - Making Metadata Part of the Process)
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step four: distribute the effort
Data Planning: Section 1: Identification Info title originator purpose content time period theme keywords abstract
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step four: distribute the effort
Data Planning Section 3: Data Organization Indirect Spatial Reference FIPS codes, county monikers, etc Object-type point, vector, or raster
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step four: distribute the effort
Data Planning Section 5: Data Organization Entities and Attributes database design and configuration Highways name surface [asphalt, concrete, unpaved] year_built restrictions [haz, 2axle, flood] district [A, B, C, D, E]
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step four: distribute the effort
Data Processing Section 2: Data Quality completeness report missing or omitted data positional accuracy digitize rms error, GPS triangulation, survey/photogrammetry/IP method
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step four: distribute the effort
Data Processing Section 2: Data Quality lineage data set source files data compilation process maps photos dbases GIS
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step four: distribute the effort
Data Analysis Section 2: Data Quality attribute accuracy field checks, cross-checks, statistical analyses lineage data analysis process
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step four: distribute the effort
Data Analysis Section 3: Data Organizations object type number of points, pixels, lines Section 5: Entity and Attributes attribute values
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step four: distribute the effort
Data Analysis Section 7: Metadata Reference metadata contact and dates
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step five: lead by example
Managers Can WRITE metadata data planning fields title abstract purpose geographic extent keywords and many more… and manage the effort metadata coordination metadata enforcement (Lynda - Making Metadata Part of the Process)
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step six: policies and procedures
Establish Policies: mandate use of standards and templates develop boilerplate metadata deliverable language for data contractors require units to publish their metadata publish metadata SOP to document policies and procedures (Lynda - Making Metadata Part of the Process)
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