The map projection defines the local coordinate system/rectangular area in which the data is specified. It is best to select a map projection that result in a minimum of distortion of the spatial data.
MIKE Zero provides a comprehensive list of pre-defined map projections that can be selected from the Map Projection type drop-down box. Often the map projection will be of type Transverse Mercator, but other types are available as well. The map projection type “LONG/LAT” is mainly relevant for model applications using spherical coordinates, i.e. for modules in the MIKE 21/3 FM series.
A map projection is basically a formula for converting between Cartesian (x,y)-coordinates - often in map projections referred to as easting and northing - and longitudes and latitudes. Thus whenever the map projection is changed you will get the opportunity to select how to synchronize the coordinates of the origin of the local coordinate system.
A User Guide on how to work with geographical data and how to create new map projections in MIKE Zero is available from the MIKE Zero General Documentation Index.