map scale
3.In this paper, we apply the theory of "Nature objects existed being excellent and washed out being of feebleness" to automated map generalization basing on thinking of the conditions of Map Use, Characters of Map Regions and Map Scale. Two generalization models which are called "Constrained Delaunay Triangle Net Generalization Model(CDTNGM)" and "Circle Generalization Model(CGM)" are created.
4.The metamorphosed and deformed tonalites are distinguished from the Archaean metamorphic strata (Jiaodong Group) by geological mapping(maP scale 1:50000)in the Qixia area.


