antimeridian
Fix shapes that cross the antimeridian. See the documentation for information about the underlying algorithm. Depends on shapely and numpy.
Can fix:
- Shapely
Polygon,MultiPolygon,LineString, andMultiLineStringobjects - GeoJSON Polygons, MultiPolygons, Features and FeatureCollections, as dictionaries
- Anything that has a
__geo_interface__
This repo has been ported to a few other languages:
- Typescript: https://github.com/krisaoe/antimeridian-ts
- Go: https://github.com/go-geospatial/antimeridian
Usage
python -m pip install antimeridian
Then:
import antimeridian
fixed = antimeridian.fix_geojson(geojson)
[!NOTE]
fix_geojsonmutates the input dictionary in-place. If you need to preserve the original GeoJSON, make a copy first:import copy fixed = antimeridian.fix_geojson(copy.deepcopy(geojson))
We also have some utilities to create bounding boxes and centroids from antimeridian-crossing polygons and multipolygons. See the documentation for a complete API reference.
Command line interface
Use the cli optional dependency to install the antimeridian CLI:
python -m pip install 'antimeridian[cli]'
antimeridian fix input.json > output.json
Developing
Get uv. Then:
git clone https://github.com/gadomski/antimeridian
cd antimeridian
uv sync
We use pytest for tests:
uv run pytest
To build and serve the docs locally:
uv run mkdocs serve
Contributing
See CONTRIBUTING.md.
License
1 maintainer
Release files for antimeridian 0.4.9
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| File | Size | Uploaded | |
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| antimeridian-0.4.9.tar.gz | 12.6 MB | Details |
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|---|---|---|---|---|
| antimeridian-0.4.9-py3-none-any.whl | Python 3 | none | any | Details |
Total release size:12.6 MB
Release files / antimeridian-0.4.9.tar.gz
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| Size | 12.6 MB |
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