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san wei di tu de ji zhu zhi tu shi yan
Author(s): Huang Wei
Pages: 91-
100
Year: 1982
Issue:
1
Journal: Geomatics and Information Science of Wunan University
Keyword: 三维地图; 机助制图; 制图物体; 平面地图; 视方位角; 表面交线; 制图区域; 高度角; 试验; 直观性;
Abstract: In this paper some examples are made to show 3-dimensional maps with different topics.These are made by the computer asisted cartographic method with IBM 370/158 computer and Calcomp ADM in the Lab of Geography Department of UND (Univer- sity of North Dakota).Nowadays three-dimensional maps are gradually used on a larger scale.The reasons are as follows: 1.Many cartographic objects have 3-dimensional surfaces,and a 3-dimensional map,so far as cartographic means is concerned,can reveal the natural feature of the object represented. 2.From the viewpoint of cartographic conception,maps made by perspective me- thods are in beter coincidence with man's view to the reality,therefore map readers can get a concrete impresion easier.Moreover,it is easy to make by means of computer asisted cartography.
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