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| 一种动态绘制无交叉法线坡面线的新算法 | |
| 引用本文： | 方雷,刘仁义,吕干,杜震洪,姚申君. 一种动态绘制无交叉法线坡面线的新算法[J]. 测绘学报, 2011, 40(4): 524-530 |
| 作者姓名： | 方雷 刘仁义 吕干 杜震洪 姚申君 |
| 作者单位： | 1. 浙江大学浙江省资源与环境重点实验室,浙江杭州310028／浙江大学地理信息科学研究所,浙江杭州310027 2. 浙江大学地理信息科学研究所,浙江杭州,310027 3. 香港大学地理系,香港,999077 |
| 基金项目： | 国家863计划(2007AA12Z182;2009AA12Z222); 中国国家博士后基金(20070421161); 浙江省重点攻关基金(2007C23091;2009C33011); 教育部博士点基金(20060335040;200803350017) |
| 摘 要： | 研究一种动态绘制任何形状的无交叉法线坡面线的新算法,用以克服传统手工绘制复杂坡面线及原有自动化技术的不足。并证明基于＂实交点定理＂及其＂补充定理＂的算法是生成无交叉坡面线的充分条件。进一步说明使用该算法可以动态绘制地形图所需要的任何形状的法线自然（加固）斜坡、崩崖、陡崖、陡石山、堤岸等图式符号。最后,通过三组试验验证算法的有效性,分析算法的特点及影响因素。 |
| 关 键 词： | 斜坡 填充图案 制图 地理信息系统 |
A New Algorithm for Creating Slope Lines with No Intersections |
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| FANG Lei,,LIU Renyi,LV Gan,DU Zhenhong,YAO Shenjun.Zhejiang Provincial Key Laboratory of GIS,Zhejiang University,Hangzhou ,China. A New Algorithm for Creating Slope Lines with No Intersections[J]. Acta Geodaetica et Cartographica Sinica, 2011, 40(4): 524-530 | |
| Authors: | FANG Lei LIU Renyi LV Gan DU Zhenhong YAO Shenjun.Zhejiang Provincial Key Laboratory of GIS Zhejiang University Hangzhou China |
| Affiliation: | FANG Lei1,2,LIU Renyi2,LV Gan1,DU Zhenhong1,YAO Shenjun31.Zhejiang Provincial Key Laboratory of GIS,Zhejiang University,Hangzhou 310028,China,2.Department of Geographic Information Science,Hangzhou 310027,3.Department of Geography,The University of Hong Kong,Hong Kong 999077 |
| Abstract: | This study develops a new algorithm to create any kinds of slope lines with no intersections automatically.It gives enough evidence to support that the real-intersection and the complementary theorem proposed in this research are sufficient conditions of the generation of slope lines without any intersections.This method can dynamically draw any kind of normal-based slopes,scarps,escarpments,steep rock hills or embankments.The efficiency of the algorithm is tested by using three experiments. |
| Keywords: | slope filled hatch cartography geographic information system |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |