What is EPSG 3857?
EPSG:3857 is a Spherical Mercator projection coordinate system popularized by web services such as Google and later OpenStreetMap.
What are the units for EPSG 3857?
WGS 84 / Pseudo-Mercator — Spherical Mercator, Google Maps, OpenStreetMap, Bing, ArcGIS, ESRI
- Unit: metre.
- Information source: Microsoft.
- Revision date: 2015-11-25.
What EPSG 4326?
If you’re really going to pick a nit: EPSG 4326 defines a full coordinate reference system, providing spatial meaning to otherwise meaningless pairs of numbers. It means “latitude and longitude coordinates on the WGS84 reference ellipsoid.”
What is the area of use for EPSG 3857?
Remarks: Uses spherical development of ellipsoidal coordinates. Relative to WGS 84 / World Mercator (CRS code 3395) errors of 0.7 percent in scale and differences in northing of up to 43km in the map (equivalent to 21km on the ground) may arise. Area of use: World between 85.06°S and 85.06°N.
How big is EPSG compared to WGS 84?
Relative to WGS 84 / World Mercator (CRS code 3395) errors of 0.7 percent in scale and differences in northing of up to 43km in the map (equivalent to 21km on the ground) may arise. Certain Web mapping and visualisation applications.
What are the coordinates of the WGS 84 Mercator?
EPSG:6512 Projected coordinate system for United States (USA) – … EPSG:3424 Projected coordinate system for United States (USA) – … NAD 1983 StatePlane Massachusetts … EPSG:3172 Area for Pacific Ocean – American Samoa, Antarctica, Australia, … EPSG:6257 Projected coordinate system for Colombia – Medellin city. …
How to convert XY coordinates to EGM offset?
If your elevation values are another EGM geoid (like EGM 2008 or EGM84), but not EGM 96, please complete the following steps: Ensure your XY coordinates have already been converted into WGS84 Lat/Long (See above). Enter the Lat/Long for each of your GCPs on this website to determine the EGM offset: