Q: What are the differences of the coordinates systems supported by SuperMap Software?
A: The coordinate systems contain three categories: geographic coordinate system, projected coordinate system, and planar coordinate system with no projection.
1. Geographical coordinate system: It is a spherical coordinate system represented by latitudes and longitudes. The coordinate unit is generally degrees, and the coordinates have geographical significance.
2. Projected coordinate system: It is a planar coordinate system, which is obtained by converting geographic coordinates to a plane through a specific projection method. The coordinate unit is generally meters, and the coordinates have geographical significance.
3. Planar coordinate system with no projection: It is a planar coordinate system. The coordinate unit is generally meters, and the coordinates are not geographically significant.
