Demystifying Web Mapping Coordinate Systems: Epsg 3857 Vs 4326
Understanding Coordinate Reference Systems A coordinate reference system (CRS) allows locating geographical features on the Earth’s surface by defining a specific map projection, coordinate system, ellipsoid and datum. The coordinate values themselves only have meaning when linked to a well-defined CRS. The two most commonly used CRSs for web mapping are: EPSG 3857 – Based…