topo-tools
topo-tools is a collection of DuckDB-powered geospatial topology utilities
for cleaning and reconciling administrative boundary polygons. It ships eight
tools, usable from the CLI or as a Python package:
| Tool | What it does | Usage |
|---|---|---|
| edge-extend | Fills gaps around a polygon layer (missing coastline, disputed areas, water bodies) with a Voronoi extension, producing full coverage. | docs/explanation/edge_extend.md |
| edge-clip | Assigns each child to its parent, then clips it to that parent's geometry. | docs/explanation/edge_clip.md |
| edge-stitch | Closes seams in an already-tiled polygon layer with one whole-table coverage-clean pass. | docs/explanation/edge_stitch.md |
| topo-detect | Scans a single polygon layer for gap/overlap coverage defects and reports them, without fixing anything. | docs/explanation/topo_detect.md |
| edge-match | Fits a finer child polygon layer into a coarser parent layer, grouping and extending each child to fill gaps within its own parent. | docs/explanation/edge_match.md |
| edge-mosaic | Re-clips an already-extended child layer into a new/different parent layer, skipping Voronoi extension entirely. | docs/explanation/edge_mosaic.md |
| topo-clean | Detects and fixes gap/overlap defects in a single polygon layer, reporting issues for manual review. | docs/explanation/topo_clean.md |
| change | Compares two versions of a polygon layer and classifies every unit as unchanged, renamed, modified, split, merged, created, or removed. | docs/explanation/change.md |
Installation
uv tool install topo-tools # CLI (recommended)
uv add topo-tools # Python library
Or with pip:
pip install topo-tools
Each linked doc above covers that tool's CLI/Python usage, options, and examples.
Supported Formats
Polygon inputs/outputs: GeoParquet (.parquet), GeoPackage (.gpkg),
Shapefile (.shp), GeoJSON (.geojson). Output format matches input format.
change's tabular changelog is CSV or GeoParquet only; its spatial overlay
layer supports the same four formats as the other tools.
See CONTRIBUTING.md for development setup.
1 maintainer
Release files for topo-tools 0.3.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| topo_tools-0.3.0.tar.gz | 63.9 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| topo_tools-0.3.0-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 173.6 kB
Release files / topo_tools-0.3.0.tar.gz
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| Size | 63.9 kB |
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