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Prof. Melinda Laituri, Colorado State University | Map Data Integrity | SotM Asia 2017

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Prof. Melinda Laituri, Colorado State University | Map Data Integrity | SotM Asia 2017

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State of the Map Asia (SotM-Asia) is the annual regional conference of OpenStreetMap (OSM) organized by OSM communities in Asia. First SotM-Asia was organized in Jakarta, Indonesia in 2015, and the second was organized in Manila, Philippines in 2016. This year’s conference, third in the series, was organized in Kathmandu, Nepal on September 23 – 24, 2017 at Park Village Resort, Budhanilkantha, Kathmandu, Nepal.

We brought nearly 200 Open Mapping enthusiasts from Asia and beyond to this year’s SotM-Asia. The event provided an opportunity to share knowledge and experience among mappers; expand their network; and generate ideas to expand map coverage and effective use of OSM data in Asian continent. We chose ‘from creation to use of OSM data’ as the theme of this year’s conference, emphasizing on the effective use of OSM data. We also brought together a government panel from four different countries in this year’s SotM-Asia. We believe this event will deepen the bond and enhance collaboration among OSM communities across Asia.

More information about the conference can be found on: http://stateofthemap.asia.

State of the Map Asia (SotM-Asia) is the annual regional conference of OpenStreetMap (OSM) organized by OSM communities in Asia. First SotM-Asia was organized in Jakarta, Indonesia in 2015, and the second was organized in Manila, Philippines in 2016. This year’s conference, third in the series, was organized in Kathmandu, Nepal on September 23 – 24, 2017 at Park Village Resort, Budhanilkantha, Kathmandu, Nepal.

We brought nearly 200 Open Mapping enthusiasts from Asia and beyond to this year’s SotM-Asia. The event provided an opportunity to share knowledge and experience among mappers; expand their network; and generate ideas to expand map coverage and effective use of OSM data in Asian continent. We chose ‘from creation to use of OSM data’ as the theme of this year’s conference, emphasizing on the effective use of OSM data. We also brought together a government panel from four different countries in this year’s SotM-Asia. We believe this event will deepen the bond and enhance collaboration among OSM communities across Asia.

More information about the conference can be found on: http://stateofthemap.asia.

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Prof. Melinda Laituri, Colorado State University | Map Data Integrity | SotM Asia 2017

  1. 1. Dr. Melinda Laituri Secondary Cities Principal Investigator State of the Map, Asia 23 - 24 September 2017 Kathmandu, Nepal Data Integrity: Quality Assurance/Quality Control (QA/QC) and Metadata Procedures
  2. 2. What is data integrity? Maintenance and assurance of accuracy and consistency of data over its entire life cycle Three key parts to data integrity: 1) metadata; 2) quality assurance/quality control (QA/QC process); 3) ethics What is metadata? contents of the data (the attibutes), the structure of the data (data format), and source of data What are Quality Assurance/Quality Control procedures? process to verify the completeness of data throughout all stages of the data development cycle
  3. 3. Integrity and correctness of data Review Correct Verif y Validate: field-truthing Checklist: ____ Metadata: spatial reference, key words (tags) ____ File structure/organization -- schema ____ Naming conventions ____ Attribute definitions ____ Cartographic templates ____ Documentation of analysis (flowchart) ____ Data disclaimer!
  4. 4. Quality Control and Quality Assurance (QA/QC) • Quality Assurance Plan: Review of objectives, procedures, and output which may include additional steps based on user input • Quality Control Process: Iterative methods to prepare data, output, and results • Conduct pilot or demonstration project Test design and methods of project and data development • Dynamic process
  5. 5. 2C Data Sharing Structure
  6. 6. 2C Geonode http://secondarycities.geonode.state.gov/ GeoNode: All data must be posted to the 2C Geonode.
  7. 7. Data cannot be shared until it has been quality checked and metadata is complete! Data without metadata is garbage!
  8. 8. What is Metadata? • Data about data • Unique to each GIS project • Summary information about data • (essential for) Data management • (necessary for) Data discovery • (facilitates) Data sharing
  9. 9. Metadata includes: -Description -Quality -Type -Creation -Spatial information Content Format -Text file -XML -Database record Standards -FGDC -ISO
  10. 10. Metadata Protocol
  11. 11. QA/QC Protocols • Existing data from project partners – National, local government – Non-governmental organizations • Data generated from workshops through field data collection – University and local government partners
  12. 12. QA/QC: Existing data from project partners • Assess metadata of existing data from project partners – Determine if there is an existing metadata protocol • If data have incomplete metadata, assess data for inclusion in project based on: – Is spatial reference data discernable? – Can attributes be understood? – Can the data be used without complete metadata? – Identify limitations in metadata
  13. 13. QA/QC: Data generated from workshops through field data collection • Identify who will conduct QA/QC other than person who collected the data • Examine data content: – Completeness of attribute data – Identify errors and process to correct data – Review metadata for completeness • Examine spatial data – Check spatial reference data

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