How-to
Task-oriented, step-by-step guides. Each one gets a specific job done, assuming you already know the basics.
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Prepare an administrative boundary release
Chain several tools to take a raw administrative boundary delivery through to a clean, coded, packaged release.
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Fix gaps and overlaps in one layer
Detect coverage defects in a single polygon layer, then fix them.
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Fit a finer layer to a coarser parent
Extend and clip a finer child layer so it fits a coarser parent/clip layer exactly.
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Map and rename columns to a target schema
Crosswalk a source file's columns onto a target admin-hierarchy schema, then rename/drop columns to match.
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Fill hierarchy columns down to each row's real depth
Stamp each row with its real admin depth, then cascade every admin-hierarchy column down to that depth.
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Package a layer for a web map
Derive the cartographic outputs a web map needs from one clean polygon layer.
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Compare an old and new boundary version
Classify every unit between two versions of a polygon layer and get a changelog plus a spatial overlay for review.
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Assign or reconcile hierarchical codes
Assign a fresh hierarchical code to a flat, uncoded layer, or reconcile an already-coded layer against a new uncoded candidate.
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Clip children to a parent, or stitch tiled seams
Use the two lower-level primitives
edge-match/edge-mosaicchain internally, directly, for a narrower job than a full fit. -
Extend a layer outward to fill gaps
Extend a polygon layer's boundaries outward using Voronoi diagrams, producing a complete coverage layer with no external gaps.