block by fil 6a1ed09f6e5648a5451cb130f2b13d20


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Use geoVoronoi.hull to compute the convex hull of a set of points in spherical coordinates.

Countries are grouped by their (World Bank) subregion, and we extract the bounding box for each of them. Then we highlight the convex hull of the set of all corners of the bounding boxes.

(With a special treatment for Antarctica and French Guyane.)

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