| 关于GIS中三种地面曲率的探讨 |
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| 引用本文： | 范红艳,戚鹏程,黄天勇.关于GIS中三种地面曲率的探讨[J].南阳师范学院学报,2011,10(6):66-69. |
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| 作者姓名： | 范红艳 戚鹏程 黄天勇 |
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| 作者单位： | 1. 南阳师范学院环境科学与旅游学院,河南南阳,473061
2. 重庆市开县丰乐中学,重庆,405400 |
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| 基金项目： | 南阳师范学院高层次人才科研启动费资助项目，2009年度南阳师范学院教学研究项目 |
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| 摘 要： | 通过曲率的数学含义,分析了剖面曲率、正切曲率和等高线曲率三种地面曲率的内涵差异,并探讨了四次表面模型法、基于空间矢量模型的差分计算法和SOS/SOA法三种曲率算法,厘清了三种曲率的关系,解决了地面曲率教学中产生的困惑.
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| 关 键 词： | GIS 曲率 地面曲率 |
Study on three surface curvatures in GIS |
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| FAN Hong-yan,QI Peng-cheng,HUANG Tian-yong.Study on three surface curvatures in GIS[J].Journal of Nanyang Teachers College,2011,10(6):66-69. |
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| Authors: | FAN Hong-yan QI Peng-cheng HUANG Tian-yong |
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| Institution: | 1.School of Environmental Science and Tourism,Nanyang Normal University,Nanyang 473061,China; 2.Fengle Middle School in Kaixian,Chongqing 405400,China) |
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| Abstract: | This paper analyzes the difference in meaning between profile curvature,tangental curvature and contour curvature on the basis of the conception of curvature in math,and discusses three methods of curvature arithmetic,that is fourth-order polynomial surface model,diffenential calculation based on spatial vector model and SOS/SOA method.Three curvatures are beginning to become clear.Puzzles in teaching about surface curvatures have been settled. |
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| Keywords: | GIS curvature surface curvature |
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