Exact point
A source-supported site or event coordinate with appropriate evidentiary precision.
Source-aware atlas methodology
Evidence Geometry and Geographic Precision
Longitude and latitude do not automatically make a record exact. Geographic precision must be declared because points, lines, and polygons can represent very different kinds of historical and analytical claims.
Core distinctions
The operational standard
Locality and proxy
A named settlement or contextual regional anchor that must never be presented as an exact site.
Route and trace
A topology edge, reconstructed corridor, archival front trace, or generalized operational line.
Density geometry
An overview surface or aggregation designed for scale, not an assertion that every cell is an event.
01
Geometry status as metadata
Geometry class belongs in the record schema and selected-record panel, not only in internal documentation.
02
Visual separation
Exact evidence, contextual geography, analytical reconstruction, and review geometry require distinct symbols and interaction behavior.
03
Precision as an ethical obligation
Explicit geographic uncertainty protects the historical record from accidental overstatement and gives users a defensible way to read incomplete evidence.
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