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UID:pretalx-foss4g-na-2026-P9SPPM@talks.osgeo.org
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DESCRIPTION:Tiled processing of large rasters produces altered results near
  tile edges for some algorithms. In our elevation-derived hydrography data
  validation tools\, we used watershed-based tiles for flow accumulations a
 nd feature windows for zonal statistics to minimize edge effects.
DTSTAMP:20260814T163257Z
LOCATION:Compagno
SUMMARY:Terrain analysis of large datasets: applications from the National 
 Map - Ryan Gillespie
URL:https://talks.osgeo.org/foss4g-na-2026/talk/P9SPPM/
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