Geometry-based mapping of vector data and DEM based on hierarchical Longitude/Latitude Grids

Mapping of vector and DEM is one of main methods for ascertaining spatial object locations in 3D dimension space. What's more, mapping technology has been widely used in the analysis and management of virtual landscape. Various methods of mapping vector data and DEM on the plane have been approached. However, when those methods are used for mapping global… CONTINUE READING