Atlas · Mauritania
/
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
34.9 ha
Largest patch 29.0% of area
Largest-size outliers
z-score of ln(area): how many standard deviations above typical
| Formation | Area (ha) | z | Location |
|---|---|---|---|
| Mangrove | 63.5 | 2.85 | 16.1027, -16.4493 |
| Mangrove | 44.2 | 2.63 | 16.1009, -16.4576 |
| Mangrove | 34.5 | 2.48 | 16.0861, -16.4597 |
| Mangrove | 17.3 | 2.07 | 16.3263, -16.4395 |
| Mangrove | 6.2 | 1.46 | 16.0827, -16.4647 |
| Mangrove | 4.9 | 1.32 | 16.2203, -16.5015 |
| Mangrove | 3.6 | 1.14 | 16.3445, -16.4395 |
| Mangrove | 3.5 | 1.12 | 16.0885, -16.4745 |
| Mangrove | 3.5 | 1.12 | 16.3158, -16.4435 |
| Mangrove | 3.1 | 1.05 | 19.3871, -16.5377 |
Most irregular outlines
Shape index (perimeter ÷ circle perimeter): high values suggest jagged or sliver-like edges
| Formation | Area (ha) | Shape idx | Location |
|---|---|---|---|
| Mangrove | 63.53 | 3.4 | 16.1027, -16.4493 |
| Mangrove | 34.47 | 2.9 | 16.0861, -16.4597 |
| Mangrove | 2.15 | 2.7 | 16.3364, -16.4413 |
| Mangrove | 44.19 | 2.6 | 16.1009, -16.4576 |
| Mangrove | 3.61 | 2.5 | 16.3445, -16.4395 |
| Mangrove | 4.90 | 2.4 | 16.2203, -16.5015 |
| Mangrove | 1.80 | 2.3 | 16.2234, -16.4151 |
| Mangrove | 1.81 | 2.3 | 16.0944, -16.4547 |
| Mangrove | 1.98 | 2.2 | 16.2241, -16.4980 |
| Mangrove | 17.26 | 2.2 | 16.3263, -16.4395 |
| Mangrove | 0.95 | 2.0 | 16.0926, -16.4573 |
| Mangrove | 0.95 | 2.0 | 16.1136, -16.4572 |
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.