Atlas · Benin / 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
319.3 ha
Largest patch 36.8% of area

Largest-size outliers

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

FormationArea (ha)zLocation
Mangrove808.65.926.3079, 1.9417
Mangrove128.44.566.3337, 2.1159
Mangrove113.54.476.3173, 2.0213
Mangrove76.14.176.3238, 1.9706
Mangrove60.64.006.3515, 2.2980
Mangrove38.63.676.3170, 1.9836
Mangrove30.73.506.3389, 2.1359
Mangrove30.23.496.3018, 1.9221
Mangrove22.93.286.3219, 1.9856
Mangrove22.63.276.3300, 1.9729

Most irregular outlines

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

FormationArea (ha)Shape idxLocation
Mangrove808.5712.36.3079, 1.9417
Mangrove128.398.06.3337, 2.1159
Mangrove76.156.36.3238, 1.9706
Mangrove30.655.36.3389, 2.1359
Mangrove60.595.36.3515, 2.2980
Mangrove38.565.06.3170, 1.9836
Mangrove18.754.56.3494, 2.2437
Mangrove11.464.16.3486, 2.2591
Mangrove113.464.06.3173, 2.0213
Mangrove14.393.86.3232, 2.0497
Mangrove9.423.76.3195, 1.9503
Mangrove5.513.76.3440, 2.2041
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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