Atlas · Togo / 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
0.8 ha
Largest patch 8.1% of area

Largest-size outliers

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

FormationArea (ha)zLocation
Mangrove2.03.036.2602, 1.7134
Mangrove1.92.926.2634, 1.7292
Mangrove1.82.866.2650, 1.7336
Mangrove1.42.596.2728, 1.7577
Mangrove1.02.146.2427, 1.6240
Mangrove1.02.146.2664, 1.7348
Mangrove0.92.026.2731, 1.7529
Mangrove0.92.026.2610, 1.7181
Mangrove0.71.756.2443, 1.6074
Mangrove0.61.596.2688, 1.7425

Most irregular outlines

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

FormationArea (ha)Shape idxLocation
Mangrove2.042.26.2602, 1.7134
Mangrove1.872.26.2634, 1.7292
Mangrove0.982.06.2427, 1.6240
Mangrove0.892.06.2731, 1.7529
Mangrove1.781.96.2650, 1.7336
Mangrove1.421.86.2728, 1.7577
Mangrove0.711.86.2443, 1.6074
Mangrove0.981.76.2664, 1.7348
Mangrove0.531.66.2734, 1.7596
Mangrove0.891.66.2610, 1.7181
Mangrove0.621.56.2688, 1.7425
Mangrove0.361.46.2642, 1.7259
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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