Atlas · Somalia / 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
111.3 ha
Largest patch 11.1% of area

Largest-size outliers

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

FormationArea (ha)zLocation
Mangrove418.13.31-1.1556, 41.9085
Mangrove232.53.01-0.7983, 42.0597
Mangrove185.52.89-0.7676, 41.9953
Mangrove158.32.8111.3857, 43.3845
Mangrove126.12.70-0.7913, 41.9863
Mangrove119.12.6710.8172, 45.8716
Mangrove118.02.66-1.1262, 41.7101
Mangrove96.22.56-0.9002, 41.9531
Mangrove97.62.5610.8164, 45.8587
Mangrove79.52.46-1.2033, 41.7323

Most irregular outlines

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

FormationArea (ha)Shape idxLocation
Mangrove117.965.8-1.1262, 41.7101
Mangrove79.535.2-1.2033, 41.7323
Mangrove96.165.1-0.9002, 41.9531
Mangrove31.634.8-1.1721, 41.7448
Mangrove126.104.7-0.7913, 41.9863
Mangrove56.524.511.9718, 50.7679
Mangrove36.834.411.9815, 50.7870
Mangrove27.084.3-1.1888, 41.7169
Mangrove75.434.0-0.8676, 42.0957
Mangrove16.174.0-1.1203, 41.7696
Mangrove185.543.8-0.7676, 41.9953
Mangrove418.133.8-1.1556, 41.9085
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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