| 基于格网模型的等高线算法 |
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| 引用本文： | 张显全,刘忠平.基于格网模型的等高线算法[J].计算机科学,2005,32(9):199-201. |
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| 作者姓名： | 张显全 刘忠平 |
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| 作者单位： | 广西师范大学计算机科学系,桂林,541004;广西师范大学计算机科学系,桂林,541004 |
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| 基金项目： | 本文得到国家自然科学基金（60073024）和广西自然科学基金（0447035）的赞助. |
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| 摘 要： | 提出了一种通过格网模型生成等高线的方法.通过计算规则格网模型中顶点的符号来确定等高线与格网中棱的交点数目,根据交点的数目和格网中心点的符号确定等高线的跟踪方向,对等高线上的点用样条曲线连接可得等高线.实验结果表明,此算法正确、有效,运行效率高.
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| 关 键 词： | 等高线 格网模型 表面形态 地理信息系统 |
An Algorithm of Contour Lines Based on Regular Grid |
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| ZHANG Xian-Quan,LIU Zhong-Ping.An Algorithm of Contour Lines Based on Regular Grid[J].Computer Science,2005,32(9):199-201. |
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| Authors: | ZHANG Xian-Quan LIU Zhong-Ping |
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| Affiliation: | Department of Computer Science, Guangxi Normal University, Guilin 541004 |
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| Abstract: | Contour is the most important element in traditional maps and modem geographic information system. This paper presents an algorithm of contour lines based on regular grid, which estimate contour points and trace contour lines by labeling vertices according to their elevation. Contour lines are fitted by using spline function. The experimental results show that the algorithm is correct, effective and high efficiency. |
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| Keywords: | Contour line Grid model Surface pattern Geographic information system |
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