Lake Tahoe iTIN TDB v 0.1 (terrain only)

• 10 meter DEM over a 30 km x 50 km area

• ~90 min to compile iTIN (SGI Octane)

• ~30 min to generate STF 2.5.1 (SGI Octane)

  • 24 files, 1.38 GB

• ~10 min to convert to STF 3.0.1 (NT PC)

  • 25 files, 152 MB

• ~ 20 min to import STF into SEE-IT (NT PC)

  • 532,970 polygons (355 polygons/sq km)

• < 3 min for automated error analysis (NT PC)

  • 270 Sliver polygons
  • 83 Narrow polygons
  • 3 Small area polygons

Narrow Polygon

Sliver Polygon

Small Area Polygon

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