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UID:pretalx-qgis-uc2026-C8FKSX@talks.osgeo.org
DTSTART;TZID=CET:20261005T140000
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DESCRIPTION:At the National Land Survey of Finland\, a new QGIS-based topog
 raphic data production system was introduced last year. The system include
 s quality assurance tools that enable users to verify the logical consiste
 ncy of topographic data.\n\nThe tools support validation of attribute valu
 e domains\, geometric consistency\, and the correctness of topological rel
 ationships among maintained features. Detected quality errors are listed i
 n a QGIS panel and visualized in the map view.\n\nTo assess topological co
 nsistency\, nearly 20 different topological rules have been defined. The r
 ules are applied to relevant pairs formed from approximately 100 different
  feature classes (points\, lines\, and polygons)\, resulting in about 8\,0
 00 distinct rule evaluations. Quality checks are performed directly in the
  PostGIS database whenever edits made in QGIS are saved\, and the results 
 are presented to users almost in real time.\n\nIn this presentation\, I wi
 ll introduce the operating principles of the quality assurance tool\, the 
 adopted custom-made topological rule set\, and demonstrate how these rules
  support the maintenance of topographic data.
DTSTAMP:20260724T214502Z
LOCATION:Pegna
SUMMARY:Topological Quality Assurance in QGIS-Based Topographic Data Produc
 tion - Eero Hietanen
URL:https://talks.osgeo.org/qgis-uc2026/talk/C8FKSX/
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