Changelog

Compare two versions of a polygon layer (e.g. ADM2 across census rounds) and classify each unit as unchanged, modified, merged, split, created, or removed. Drop both versions; the tool overlays them, scores coverage per pair, and groups related polygons into clusters.

Drop both layers

Version A

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Older version. Polygon layer in any supported format.

Version B

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or browse

Newer version. Same coverage area.

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unchanged renamed modified relocated merge split complex created removed

Class	Version A code	Version A name	Version B code	Version B name

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