Coordinate Reference Systems

FarmLab allows users to import and export a range of file formats, our system will automatically import a file using the WGS84 coordinates. When exporting users are given options to export using a number of reference systems such as: WGS84-EPSG:4326 (commonly used Aust coordinate system), WGS84/PSeudo-Mercator- EPSG3857, GDA2020/MGA zone 55- EPSG:7855 (CER preferred coordinate system) or GDA94-EPSG:4283

* WGS84 (World Geodetic System 1984) is a standard coordinate reference system used by the Global Positioning System (GPS) and other satellite-based navigation systems to accurately pinpoint a location on the Earth's surface. It is a global system and is widely used in mapping, surveying, and navigation applications.

* GDA2020/MGA zone 55 (EPSG:7855) is a coordinate reference system used in Australia. It is based on the Geocentric Datum of Australia 2020 (GDA2020), which is the most recent geodetic datum for Australia, replacing the previous GDA94 datum. The GDA2020 is aligned with the international reference frame and provides a more accurate representation of the Earth's surface in Australia.

The MGA (Map Grid of Australia) zone 55 is one of the 56 zones that cover the Australian continent. It is located in the eastern part of Australia and covers an area between 150°E and 156°E longitude. The zone is based on the Universal Transverse Mercator (UTM) projection and has a central meridian of 153°E.

The EPSG code 7855 refers to the specific implementation of GDA2020/MGA zone 55 in the EPSG (European Petroleum Survey Group) geodetic parameter registry, which is a standardized database of coordinate reference systems used in geospatial applications.


FarmLab Accuracy Guidance: The accuracy of the Leaflet basemap can vary depending on several factors, such as the data source, scale, and level of detail of the map. Generally, the basemap is designed to provide a good visual reference for general location and orientation purposes, rather than precise spatial accuracy or survey-grade data. The accuracy can also be affected by the projection and coordinate system used in the basemap, which may not be suitable for certain types of analysis or mapping applications. It is therefore important to evaluate the accuracy and suitability of the basemap for your specific needs and consider using more accurate and reliable data sources or survey-grade equipment if necessary.
We suggest proper farm surveying, rather than using imagery from the farm itself. FarmLab system uses WGS84 when drawing and creating polygons and are accurate for Carbon projects. We highly recommend use digital cadastres in FarmLab to setup project boundaries (which are also provided in WGS84 format).