CRS
A Coordinate Reference System (CRS) tells you how to interpret coordinates on a map.
It defines:
- The coordinate system (e.g., latitude/longitude vs. x/y)
- The map projection or datum (how the Earth’s shape is transformed to a flat map)
- The units and axes (degrees, meters, etc.)
So the same numeric coordinates can point to different places depending on the CRS.
Common examples:
- Web Mercator (EPSG:3857): x/y in meters for many web maps and default in the Tygron Platform.
- WGS 84 (EPSG:4326): longitude/latitude in degrees (used by GPS and GeoJSON).