Atlas · Liberia / 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
517.8 ha
Largest patch 10.1% of area

Largest-size outliers

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

FormationArea (ha)zLocation
Mangrove2,038.56.056.1279, -10.3018
Mangrove1,522.55.856.2968, -10.7374
Mangrove1,035.55.594.5598, -8.0302
Mangrove720.65.355.9678, -10.0887
Mangrove489.95.096.7724, -11.3554
Mangrove449.55.034.9735, -8.9332
Mangrove413.14.976.5698, -11.0416
Mangrove405.24.964.3989, -7.7427
Mangrove399.24.955.2262, -9.3010
Mangrove371.04.905.4555, -9.5637

Most irregular outlines

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

FormationArea (ha)Shape idxLocation
Mangrove2,038.5414.96.1279, -10.3018
Mangrove1,522.5210.66.2968, -10.7374
Mangrove720.619.35.9678, -10.0887
Mangrove449.549.24.9735, -8.9332
Mangrove399.258.75.2262, -9.3010
Mangrove370.988.25.4555, -9.5637
Mangrove489.858.06.7724, -11.3554
Mangrove292.797.46.5887, -11.0508
Mangrove286.707.45.4838, -9.5847
Mangrove1,035.497.04.5598, -8.0302
Mangrove198.357.06.2432, -10.5461
Mangrove413.147.06.5698, -11.0416
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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