Atlas · Democratic 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
4,875.5 ha
Largest patch 42.3% of area

Largest-size outliers

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

FormationArea (ha)zLocation
Mangrove8,292.47.57-5.9506, 12.6249
Mangrove4,695.87.16-6.0287, 12.4853
Mangrove1,367.76.27-6.0123, 12.4415
Mangrove1,246.76.21-5.9910, 12.4413
Mangrove951.86.01-5.9767, 12.4068
Mangrove476.75.52-5.9842, 12.5951
Mangrove315.65.22-6.0119, 12.5799
Mangrove230.95.00-5.9598, 12.4922
Mangrove158.94.73-5.9724, 12.6811
Mangrove153.94.71-5.9845, 12.6079

Most irregular outlines

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

FormationArea (ha)Shape idxLocation
Mangrove8,292.3928.6-5.9506, 12.6249
Mangrove158.8810.2-5.9724, 12.6811
Mangrove4,695.7710.1-6.0287, 12.4853
Mangrove951.857.2-5.9767, 12.4068
Mangrove124.296.7-5.9786, 12.6253
Mangrove75.666.5-5.9845, 12.5698
Mangrove153.906.5-5.9845, 12.6079
Mangrove476.716.1-5.9842, 12.5951
Mangrove24.635.0-5.9875, 12.6733
Mangrove31.214.9-5.9759, 12.5795
Mangrove59.574.4-5.9872, 12.6928
Mangrove26.144.4-5.9721, 12.5786
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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