Atlas · Western Sahara
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Methodologies
METHODOLOGIES
Field plots versus the map
A consistency check between survey plots and mapped formations.
Method
Each field plot point is intersected with the formation polygons (ST_Intersects). Plots on a polygon are compared with the formation recorded in the field; the share that match is reported.
Limits. This is not a formal accuracy assessment (no stratified random sample, no confusion-matrix confidence intervals). Plots off the map are reported separately.
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