Research on object models of Geo-thematic graphics
Fu Wei · Journal of Shaanxi Normal University · 2000
This paper presents the analysis approaches of oriented objects for geo thematic graphics,and structures the object models of geographic data,which are suitable for computer to analyze and process.The models solve the problems of computer compressing store and analysis and processing for map elements,with relationship and coexistence of geo graphics database and geo attribute data files.The system processes spatial data of map elements with topological models,and settles attribute data of map elements with relative mathematics models.Also,the system realizes mutual visits and operations between geo graphics data and attribute ones by the relationship between the two mathematics structures.Furthermore,the system achieves the information and electronic analysis of geo thematic graphics on the platform of MS Windows and Borland OWL,by software programming with object oriented technology.