A SPATIAL AND TEMPORAL 4-D DATAMODEL FOR MINE GIS
Guo Dazhi. Yang Weiping. Han Guojian(China University of Mining and Technology)
: Many present Geographic Information Systems (GISs) generally do not support ma nipulations of the temporal data. This paper raises the needs for a spatially and tempor ally oriented GIS from the points of view of mining related activities. Based on the d-iscussion of shortcomings existing in the traditional data model and the philosophy of tacki ng the additional historical data, an integrated four dimensional data model for mine GIS is proposed. The data model on the storage requirement can be reduced to a large extent by using the linear encoding technique of the 4-D space. Finally, a new branch of topology, namely, the spatial and temporal topology is worked out to accommodate, the operations of the integrated 4桪 data.