U.S. Department of the Interior U.S. Geological Survey ASPRS Panel on USGS Progress on Remote...
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S. Department of the Interior S. Geological Survey ASPRS Panel on USGS Progress on Remote Sensing Calibration and Quality The National Map Quality Assurance Program May 26, 2004
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Transcript of U.S. Department of the Interior U.S. Geological Survey ASPRS Panel on USGS Progress on Remote...
U.S. Department of the InteriorU.S. Geological Survey
ASPRSPanel on USGS Progress on Remote
Sensing Calibration and Quality
The National Map
Quality Assurance Program
May 26, 2004
…and the complexity of validating data for The National Map will be presented.
The National Map
Composed of integrated, constantly maintained geospatial information
Produced by a consortium of Federal, State, and local partners who provide geospatial data
Eight Base Data Themes Orthoimagery, Elevation, Hydrography,
Geographic Names, Land Cover, Transportation, Boundary, Structures
Catalog of data that resides on USGS and Partner Web Mapping Services
The National Map Catalog
There are currently about 800 layers of publicly available data in the The National Map catalog.
The data are being served from more than 80 different map services, most of which are not owned or controlled by the USGS
Nominal map scales range from as small as 1:3,500,000 to as large as 1:5,000
Most data layers contain little or no metadata that supports quality assessment
The National Map
For more information:
http://nationalmap.usgs.gov
Tomorrow 9:30-12:00 First Steps Toward
Implementing The National Map
QA Program Guidance
The National Map Implementation Plan
Geography Discipline Leaders Speak About The National Map Quality
QA Development Strategy
The National Map Implementation Plan
The USGS will lead by: Guaranteeing national data completeness,
consistency, and accuracy
The USGS will ensure the quality of The National Map data by: Devising and implementing quality assurance
procedures Promoting process certification criteria for
content providers
Geography Discipline Leaders Speak
About The National Map Quality “Users will find trusted content….”
“The National Map – integrated, certified base mapping content”
(From “A Clear Vision of the NSDI,” Geospatial Solutions article)
Geography Discipline Leaders Speak About The National Map Quality
“…the USGS wants to assure the surveying community of the map’s quality”
“…we’re still holding true to certifying the quality of data that goes into it. Users know they can trust it because its got the USGS name”
(From “The Latest News, Building The National Map,” Point of Beginning article)
QA Development Strategy
Establish a formal QA program Form a QA program development team
Recommend and document validation procedures
Recommend organizational structure Develop cost estimates and implementation
schedule for QA program Identify policy issues in implementing the QA
program
The National Map Quality Assurance Team Mike Duncan, Jane Messenger, Robert Rinehart
Mid-Continent Mapping Center
George Lee, Wally Oliver, Tracy Fuller Western Region Geography
Greg Stensaas EROS Data Center
Bruce Boman Rocky Mountain Mapping Center
Jay Storey Eastern Region Geography
Current QA Process
The National Map Catalog Support Teams at MCMC and ERG currently populate and maintain the The National Map catalog
The teams are working to formalize initial QA procedures
QA currently consists of manual evaluation and inspection
Current Quality Evaluations
Inclusion or exclusion Theme association Geographic extent Scale Availability Horizontal registration with other layers Metadata
Metadata
The inclusion of appropriate metadata with all layers of The National Map is critical to the QA Program
For years the USGS has strongly endorsed the FGDC metadata standard
The USGS is requiring that all partners supply FGDC compliant metadata with their data
XMLInput, a metadata entry tool, is available from the USGS The USGS will provide XMLInput S/W and training.
QA Implementation Plan Outline
Define criteria for data in each theme Become familiar with partners’ production
processes. Implement a “certification” process for partners,
processes, and data Identify statistical methods for evaluating data Include plan for evaluating new technologies Develop funding requirements for QA
implementation plan Present QA implementation plan to USGS
Geography Discipline Senior Staff
