Detail and missing-data assumptions
The grid is used when close intersections need resampling, or when selected above. Smaller cells retain finer edges and require more memory. The result reports the actual spacing if a size limit applies; this does not improve source elevation accuracy.
Unknown building heights use the floor settings below. Roofs without a known shape use the selected fallback. These are assumptions, not measured details.
Set road gap to 0 to keep mapped enclosed gaps.