virtual double MgCoordinateSystem::GetLonMin

(

)

[pure virtual]

Returns this system's minimum longitude value in degrees. If not set in the dictionary, the value returned here has been calculated by the underlying coordinate system transformation engine.

Returns:

Returns this system's minimum longitude value in degrees. Only returns 0 (if it's not the actual value) if explicitely set via SetLonLatBounds or CancelLonLatBounds.