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Concept

WGS84

The geodetic coordinate system standard adopted by the Global Positioning System, widely used for GPS and geospatial data. It is a common coordinate reference for spatial data.

Timeline (last 90 days)

Oct 16

Common coordinate assumption problems include: defaulting to WGS84 but actually mixing in local coordinate systems, inconsistent elevation benchmarks (such as confusing altitude above sea level with ellipsoidal height), and units not clearly marked between meters and feet.

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Oct 11

OSMnx loses latitude and longitude when saving a projected graph, causing the GPX export to contain entirely empty coordinates; the solution is to back-project node x/y attributes to WGS84.

Unverified50%
Sep 22

SRID 4326 corresponds to the WGS84 geographic coordinate system (longitude/latitude), and SRID 3857 corresponds to the Web Mercator projection (the common coordinate system for WebGIS base maps).

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