Atlas · Kenya / 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
515
0.9% of all polygons
Polygons < 0.001 ha
62
Likely slivers (≈ 10 m²)
Geometries repaired
55,235
Invalid shapes fixed on import
Effective mesh size
114.9 ha
Largest patch 3.7% of area

Largest-size outliers

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

FormationArea (ha)zLocation
Rhizophora dominant1,277.48.00-2.1781, 40.9883
Rhizophora dominant738.67.52-1.7883, 41.4658
Rhizophora dominant623.57.38-2.0190, 41.1700
Rhizophora dominant328.56.82-2.1155, 41.1142
Avicennia almost pure stand326.26.81-1.8996, 41.0242
Rhizophora dominant295.46.73-1.9802, 41.2558
Rhizophora dominant281.26.69-2.1061, 41.1612
Rhizophora dominant257.06.61-2.1238, 41.1386
Avicennia almost pure stand238.06.54-1.9629, 40.8283
Ceriops dominant209.66.43-2.1606, 40.9828

Most irregular outlines

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

FormationArea (ha)Shape idxLocation
Avicennia almost pure stand326.1611.3-1.8996, 41.0242
Mixture of Ceriops & Rhizophora164.2510.8-2.0957, 41.1101
Rhizophora dominant738.5710.3-1.7883, 41.4658
Ceriops dominant209.589.5-2.1606, 40.9828
Ceriops dominant142.309.3-2.0781, 41.0606
Rhizophora dominant1,277.429.3-2.1781, 40.9883
Ceriops dominant89.899.0-2.1324, 41.0267
Rhizophora dominant106.068.8-2.3668, 40.7800
Avicennia almost pure stand238.038.8-1.9629, 40.8283
Mixture of Ceriops & Rhizophora109.008.5-1.9532, 41.2375
Mixture of Ceriops & Rhizophora49.258.2-1.9544, 41.2690
Rhizophora dominant157.028.2-2.3571, 40.7889
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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