introduction to geospatial metadata module 1 – introduction to metadata and metadata standards
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Introduction to Geospatial Metadata
Module 1 – Introduction to Metadata and Metadata Standards
Objectives• learn what metadata is and why it is helpful to discover, access and
understand various types of data• Know the current standards and formats of metadata standards in common
use by federal government agencies• Identify tools and resources needed to write metadata in both the CSDGM
and the ISO standard• be aware of the commonly used fields within different standards• Know the importance of “valid” metadata for interoperability among
standards• Write quality metadata to document “your” data as completely as possible• Discover datasets of different types from NCEI data holdings by searching
metadata catalog
Agenda Introduction to Geospatial
MetadataDate Module Title
June 04, 2015 Introduction to Metadata and Metadata Standards
June 11, 2015 UML Basics and XML Basics
June 18, 2015 Tools for CSDGM
June 25, 2015 Tools for Creating ISO Metadata
July 02, 2015 Transforms and Stylesheets
July 09, 2015 Advanced Topics
Logistics• All participants on “mute” to begin• Use “Questions” pane for questions• Use chat or ncddcmetadata@noaa.gov for
technical Diffiiculties• Session will be recorded and posted• Poll for CSDGM interest
WHAT IS METADATA?WHY IS IT IMPORTANT?
Metadata 101
What is Metadata?
Metadata is information
“about” your data
Who?Who?WhatWhat
WhereWhere
WhenWhen
HowHowWhyWhy
Who collected the data?Who processed the data?Who wrote the metadata?Who to contact for questions?Who to contact to order?Who owns the data?
What are the data about?What project were they collected under?What are the constraints on their use?What is the quality?What are appropriate uses?What parameters were measured?What format are the data in?
When were the data collected?When were the data processed?
Why were the data collected?
How were the data collected?How were the data processed?How do I access the data?How do I order the data?How much do the data cost?How was the quality assessed
Where were the data collected?Where were the data processed?Where are the data located?
Metadata answers questions “about” the data….
We often use metadata without even knowing it.
We often use metadata without even knowing it.
Examples?Examples?
Metadata contains vitalinformation
Without a label, how would you know which
one to open?
Spinach?Ravioli?
Imagine being given two identical cans.Your task is to choose one to eat. But here’s the catch. Neither can has a label. Which would you choose?
aurora with comet
This is the metadata for this.
What’s Missing?
Author(s) Blair, Diane. Title(s) Whales watching/ by Diane Blair and Pamela Wright Place Mankato, Minn. : Capstone Books 1997. Physical Descr 48 p.: col. ill., col. maps ; 23 cm. Subject(s) Whales -- Juvenile literature
Whale watching -- Juvenile literature
Author(s) Blair, Diane. Title(s) Whales watching/ by Diane Blair and Pamela Wright Place Mankato, Minn. : Capstone Books 1997. Physical Descr 48 p.: col. ill., col. maps ; 23 cm. Subject(s) Whales -- Juvenile literature
Whale watching -- Juvenile literature
While the card-catalog entry is a form of metadata, it does not address topics such as quality, accuracy,
or scale. Well-written geospatial metadata describes these
and many more aspects of the data.
This is the metadata for this.
This is the metadata for this.
Who, What, Where, When, Why, and How
Who, What, Where, When, Why, and How
What is Metadata? metadata can have different functions…
documentation management discovery access use
. . . A COMPONENT OF DATAMetadata is….
A Component of Data
Properly documented data provides vital information to interested parties.
A published map contains “elements” of metadata…
• Publisher• Publication date• Type of map• Title / Description • Spatial references• Scale and accuracy
• Sources
• LegendMetadata – a “component
of data”
Metadata – a “component
of data”
What’s missing?
Metadata is that component of data which describes it.
Environmental Sensitivity Index Data
Metadata
RARNUM - unique combination of species, concentration, and seasonalityCONC (concentration) = Density species is found at locationSeason_ID = seasonality code like to the seasonal table
Element - Biology group
Metadata – a “component
of data”
• CONTENT
• CONDITION
• QUALITY
• CONTENT
• CONDITION
• QUALITY
Characteristics of the data
Metadata describes…
Metadata – a “component
of data”
Because metadata provides vital information about a
dataset, it should never be viewed or treated as a
separate entity.
Because metadata provides vital information about a
dataset, it should never be viewed or treated as a
separate entity.
Metadata is a critical component
of a complete data set.
Metadata is a critical component
of a complete data set.
1980
HEWTeheran
British HondurasCape Hatteras Light
Mt. St. HelenWest Germany
2005
HHS & HUDTehranBelizeCape Hatteras LightMt. St. HelenGermany
Metadata should be updated to reflect changes in the data…
WHY DO METADATA?The Value of Metadata
Why does an organization need to be able to track its data or work?
• What about the employee whois ready to retire?• Do you know what he did or how did it?• What were his processing steps?• What about the grad student who is leaving?• Do you even know where their data is?
Properly documenting a data set is the key to
preserving its usefulness through time.
For data developers, metadata helps to …
• Avoid duplication• Share reliable information• Publicize efforts• Reduce workload!!
For organizations,metadata helps to …
• Protect investment in data• Create an institutional memory• Counter personnel changes• Allow sharing of data with other agencies• Save time and money• Limit potential liability
This saves time and money.This saves time and money.
For data users, metadata...
• Facilitates understanding• Focuses on key elements• Enables discovery – inside and outside of
organizations– Find data of interest– Determine data usefulness– Determine data access
For organizations,metadata helps to …
• Protect investment in data• Create an institutional memory• Counter personnel changes• Allow sharing of data with other agencies• Save time and money• Limit potential liability
This “data discovery” is all accomplished through the use of
a clearinghouse, an on-line searchable catalog of
standardized metadata records.
This “data discovery” is all accomplished through the use of
a clearinghouse, an on-line searchable catalog of
standardized metadata records.
METADATA POLICIESWhy do we develop metadata?
Metadata Policies• US National/Federal Policies– Executive Order 12906– OMB Circular A-16– OMB Circular A-119– Open Data Policy– Public Access to Research Results (PARR)
• NOAA Policies– NAO 212-15– EDM Data Documentation Directive
MANY POLICIES
DIRECT US
TO “DOCUMENT”
OUR DATA
AND MAKE IT
“ACCESSIBLE”
National Policy• EO 12906• OMB Circular A-16• OMB Circular A-119• Open Data Policy• OMB memorandum M-13-13
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
OMB Circular A-119
Open Data Policy (Project Open Data)
Agency Policy / NOAA Policy
• NAO 212-15• EDM Data Documentation Directive• NOAA Public Access to Research Response
NAO 212-15 Data Documentation Directive
What do these policies say “in a nutshell” ?
• Have a data management strategy• Use standard metadata• Publish the metadata• Make data accessible
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