Atlas · Egypt / 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
16.3 ha
Largest patch 17.0% of area

Largest-size outliers

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

FormationArea (ha)zLocation
Mangrove34.82.5828.1742, 34.4495
Mangrove25.82.3926.7662, 33.9625
Mangrove18.82.2027.2160, 33.8781
Mangrove18.32.1924.2224, 35.4174
Mangrove17.92.1826.7369, 33.9780
Mangrove10.31.8427.2117, 33.8754
Mangrove9.71.8124.3103, 35.3620
Mangrove8.91.7528.1497, 34.4476
Mangrove6.71.5827.6688, 33.7047
Mangrove5.91.5128.2074, 34.4194

Most irregular outlines

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

FormationArea (ha)Shape idxLocation
Mangrove34.853.428.1742, 34.4495
Mangrove18.303.124.2224, 35.4174
Mangrove25.772.426.7662, 33.9625
Mangrove17.932.426.7369, 33.9780
Mangrove3.122.426.7736, 33.9678
Mangrove1.532.225.8673, 34.4143
Mangrove2.412.226.4008, 34.1147
Mangrove5.932.128.2074, 34.4194
Mangrove2.162.126.7708, 33.9632
Mangrove3.372.023.4803, 35.4892
Mangrove1.062.024.2181, 35.4252
Mangrove8.932.028.1497, 34.4476
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.
Guest preview · 179s left Explore until the timer ends. Then you’ll be asked to log in or create an account (about two minutes) to keep going.
Ask Atlas