Atlas · Mali
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Signals & Anomalies
INTELLIGENCE
Signals & anomalies
Statistical checks that flag polygons and patterns that look unusual. They are prompts for review, not errors: an unusual polygon can be a real feature.
Polygons < 0.01 ha
0
0.0% of all polygons
Polygons < 0.001 ha
0
Likely slivers (≈ 10 m²)
Geometries repaired
55,235
Invalid shapes fixed on import
Effective mesh size
0.0 ha
Largest patch 0.0% of area
Largest-size outliers
z-score of ln(area): how many standard deviations above typical
| Formation | Area (ha) | z | Location |
|---|
Most irregular outlines
Shape index (perimeter ÷ circle perimeter): high values suggest jagged or sliver-like edges
| Formation | Area (ha) | Shape idx | Location |
|---|
How to use this page. Check flagged polygons against recent satellite imagery. Remove genuine mapping artefacts in the next source update; keep real features. Atlas never edits the source data silently.