Atlas · Republic of the Congo / 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
302.8 ha
Largest patch 23.8% of area

Largest-size outliers

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

FormationArea (ha)zLocation
Mangrove714.45.16-4.4679, 11.7300
Mangrove483.54.91-4.4221, 11.7343
Mangrove337.44.67-4.4588, 11.7154
Mangrove148.64.13-4.0136, 11.2707
Mangrove66.23.60-4.4418, 11.6849
Mangrove62.93.57-4.1465, 11.4433
Mangrove62.23.56-3.9322, 11.3391
Mangrove51.53.44-4.0066, 11.2674
Mangrove42.43.31-3.9417, 11.3426
Mangrove36.93.22-4.0150, 11.2582

Most irregular outlines

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

FormationArea (ha)Shape idxLocation
Mangrove483.496.8-4.4221, 11.7343
Mangrove148.556.0-4.0136, 11.2707
Mangrove42.365.2-3.9417, 11.3426
Mangrove337.405.1-4.4588, 11.7154
Mangrove62.855.0-4.1465, 11.4433
Mangrove22.554.9-4.3429, 11.5604
Mangrove62.164.7-3.9322, 11.3391
Mangrove30.044.6-4.1430, 11.4268
Mangrove66.224.6-4.4418, 11.6849
Mangrove14.624.5-4.1373, 11.4085
Mangrove22.204.2-4.2014, 11.3933
Mangrove22.894.1-4.9803, 11.9806
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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