Looking forward, beyond the 2.1.x line, Hades will become part of the Spring data project where it's core will serve as a base for repository implementations for other datastores as well.
On the base of analyzing the character and structure of the point, line, area symbols, a data structure of map symbol base which serves the symbolized output in digital mapping is put forward.
On the base of the type of the point cloud, the author puts forward"T"method on the scan linedata reduction, compares them with other methods of the data reduction.