@linzjs/geojson
Advanced tools
Utility functions for working with GeoJSON multi polygons and bounding boxes. In particular for handling the anti-meridian.
import { Wgs84 } from '@linzjs/geojson';
assert(Wgs84.normLon(-163.12345 - 720) == -163.12345;
assert(Wgs84.crossesAM(-175, 175));
assert(Wgs84.delta(-175, 170) == -15);
assert(deepEqual(Wgs84.union([175, -42, -178, -41], [-170, -43, -160, -42]), [175, -43, -160, -41]));
import { clipMultipolygon, multiPolygonToWgs84 } from '@linzjs/geojson';
import * as Proj from 'proj4';
// polygons clipped to bounding box; no degenerate edges
const clipped = clipMultipolygon(polygons, [-2, -2, 1, 1]);
const nztmToWgs84 = Proj('epsg:2193', 'epsg:4326').forward;
// nztm polygons converted to wgs84 split at anti-meridian
const splitPolys = multiPolygonToWgs84(nztmPolygons, nztmToWgs84);
8.0.0 (2025-05-11)
FAQs
## GeoJSON computation
The npm package @linzjs/geojson receives a total of 133 weekly downloads. As such, @linzjs/geojson popularity was classified as not popular.
We found that @linzjs/geojson demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 3 open source maintainers collaborating on the project.
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