Atlas · Comoros / 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
7.8 ha
Largest patch 17.0% of area

Largest-size outliers

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

FormationArea (ha)zLocation
Mangrove21.52.04-12.3618, 43.7238
Mangrove11.01.62-12.3607, 43.7146
Mangrove7.81.40-12.1952, 44.2357
Mangrove6.51.28-12.1694, 44.2109
Mangrove6.51.28-12.3418, 43.6676
Mangrove6.21.25-12.3597, 43.7507
Mangrove6.11.24-12.3556, 43.6626
Mangrove5.91.22-12.3620, 43.7445
Mangrove5.21.14-12.3383, 43.6649
Mangrove4.51.05-12.3623, 43.7346

Most irregular outlines

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

FormationArea (ha)Shape idxLocation
Mangrove21.492.7-12.3618, 43.7238
Mangrove6.122.5-12.3556, 43.6626
Mangrove4.542.4-12.3623, 43.7346
Mangrove5.242.0-12.3383, 43.6649
Mangrove6.472.0-12.1694, 44.2109
Mangrove2.882.0-12.2041, 44.2542
Mangrove11.011.9-12.3607, 43.7146
Mangrove1.841.8-11.3728, 43.3814
Mangrove1.051.8-12.1858, 44.2200
Mangrove2.011.8-11.9349, 43.4757
Mangrove7.781.7-12.1952, 44.2357
Mangrove2.361.7-12.1912, 44.2292
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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