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Well-Known Binary (OGC)

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.wkb · application/vnd.ogc.wkb

WKB (Well-Known Binary) is the binary representation of vector geometry from the OGC Simple Features standard (1999), the foundation of almost every GIS database: each geometry inside PostGIS, MySQL Spatial or GeoPackage is WKB. The format is several times more compact than textual WKT because coordinates are packed into doubles without ASCII. Our exporter writes the geometries of the selected OSM layers into a .wkb file: every object is standard OGC WKB, but the file is a container — an 8-byte header (a WKB marker plus the number of objects), then geometries with a length prefix, while the coordinate system lies in a companion .prj file. Honestly: to parse the file you have to read the header and the lengths — this is not a single "bare" blob for a direct ST_GeomFromWKB. Attributes are not preserved, and all the selected layers are merged into one stream of geometries (up to 500,000 objects).

Dados do OpenStreetMap de 5 de outubro de 2026 · há 23 dias