Atlas · Sudan / 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
14.6 ha
Largest patch 9.6% of area

Largest-size outliers

z-score of ln(area): how many standard deviations above typical

FormationArea (ha)zLocation
Mangrove45.92.8518.0869, 38.4683
Mangrove36.52.7018.7425, 37.5150
Mangrove26.62.5018.0274, 38.5683
Mangrove22.52.4018.7598, 37.4985
Mangrove18.02.2619.3058, 37.3212
Mangrove15.02.1418.1303, 38.5040
Mangrove14.12.1020.7563, 37.2579
Mangrove13.52.0818.0688, 38.5232
Mangrove11.31.9718.0737, 38.4999
Mangrove11.41.9718.1044, 38.4435

Most irregular outlines

Shape index (perimeter ÷ circle perimeter): high values suggest jagged or sliver-like edges

FormationArea (ha)Shape idxLocation
Mangrove36.533.518.7425, 37.5150
Mangrove2.793.219.0026, 37.4031
Mangrove14.063.020.7563, 37.2579
Mangrove22.463.018.7598, 37.4985
Mangrove45.942.918.0869, 38.4683
Mangrove8.042.919.0124, 37.3999
Mangrove17.992.819.3058, 37.3212
Mangrove8.692.819.5004, 37.2819
Mangrove3.382.719.2573, 37.3242
Mangrove11.322.618.0737, 38.4999
Mangrove3.042.619.3254, 37.3141
Mangrove14.972.518.1303, 38.5040
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.
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