3D VIEW COMPARISON NOTES
Yenra | October 11, 2026
Guide: https://yenra.com/geography/3d.html
Purpose: compare overhead and oblique views of the same terrain.
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Place and reference feature:
Map/view link and date viewed:
Elevation source, acquisition date if available, and layer description:
Bare ground, surface including objects, or combined scene:
Height units and reference surface/datum if supplied:
Vertical exaggeration (record unknown if it is not disclosed):
Overhead observation:
Oblique observation from one side (include viewing direction):
Observation from the opposite side:
Feature hidden in one view and visible in another:
What contours or labels confirm:
Measured quantity, endpoints, units, and tool:
Distance definition: horizontal / terrain-following / other / unknown
Supported conclusion:
Missing evidence or uncertainty:
Check: return to north-up, verify the same reference feature in every view,
and distinguish imagery detail from elevation measurements.
Fictional check from the guide: 600 m ridge - 400 m floor = 200 m relief.
At 3x vertical exaggeration, display relief corresponds to 600 m at the
unchanged horizontal scale; the actual relief in the data remains 200 m.