等值线

Peaks(30); N=16;% number of contour lines and their colors clf % clear the current figure view(3)% set view to 3-D hold on % hold blank screen setgca,' ColorOrder ',hsv(N % use colors from default hsv colormap contour3 % draw N contour lines grid,xlabel(' X-axis '),ylabel(' Y-axis '),zlabel(' Z-axis ') title(' CONTOUR3 of PEAKS ') hold off

输出见图 18.17。图 18.17 函数 PEAKS 的三维等值线图现在，各条等值线的颜色沿着 z 轴的变化和网格图曲面图网格图和曲面图网格图曲面图一样。

Since the boundary points is discontinuous resulting from errors in inner points and interpolated results are not on the same smooth curved surface, the algebraic methods usually generates inharmonious contour lines that may intersect with each other.

分析传统绘制等雨量线方法存在的弊端：由于边界点的不连续性导致内部点误差，同时得到的插值结果也不在同一光滑曲面上，导致生成的等值线分布不协调，甚至可能出现等值线相交的错误情况。

In the algorithm designed here, polygon-fill algorithm and "Painter Algorithm" are used to display 3-D isoline," Windup Storage" method to balance computer processing load,"Associative Fan in" method to conflate results, and "Run Length Compression" method to save network communication time.

根据等值线数据量随其属性值而变化的特点，设计了采用"卷帘存储法"实现负载平衡的等值线三维显示的并行算法；采用"结合扇入法"实现结果合并，并采用"运行长度压缩法"以缩短网络通讯时间。

In the key step of this method (the process of contour tracking), the paper puts forward the concept of grid right-correlation flag to determine the initial segment of tracking curve. In the tracking procedure, the trend of subsequent points are determined by the combinatorial values of neighborhood cells, and a method is designed to avoid contours crossing. In order to obtain high-quality contour line, it adopts it adopts the linear interpolative method to show a contour chart of accurate localization and better visual effect.

在该方法的关键过程中，提出栅格右关联标志的概念，并据此确定初始追踪段；追踪过程中依据邻域栅格值的组合特征确定后续点的走向，设计了避免等值线交叉的处理措施；为获得高质量的等值线图形，采用线性插值方法，得到准确定位和视觉效果较好的等值线图形。

Isogram addition with line, histogram, and Lorenz plot is latterly realized in HBACIS so that the results of the inquiring, calculating and analyzing of the climate information can be visually displayed. The successful exploitation of HBACIS shows that the B/S system adopted JSP can totally satisfy the requirement of the agricultural climate information system. For one thing, JSP with the characteristics of high efficiency and security, multiplatform and expansibility, basing on the object oriented language-JAVA, can be sustained widely, and is easy to exploit and maintain. The JSP tags can be extended and the components are reused. For another, the client side of the B/S system is all applied with the browser as the interface, which is very simple and wieldy.

通过比较认为逐点插入法不需要进行二次插值，不要求等值点均匀分布，比较适合在网络环境下绘制湖北省各气象要素等值线图，并采用面向对象的方法实现了等值线图、折线图、柱状图、散点图等气象上常用可视化表达的功能，使各种查询、统计、分析结果能以等值线、折线图、柱状图、散点图显示，能较直观反映查询、统计、分析结果。

Based on numerical simulation flow after treatment methods and implementation. This paper drawing river ice jam thickness contour map, vertical water flow under the ice jam contour map as an example, the use of Surfer software described in detail various graphics rendering; Focused on the Surfer with VB programming software secondary development to achieve flow numerical simulation after treatment, showed that automatic change the data files to the Surfers;Introduced Active automation technology and Visual Basic Application Program Interface, and the interface technology will combinate VB powerful software development capabilities and Surfer software powerful mapping functions , achieve the key code and the mapping results map examples: under the ice sheet flow velocity field vertical contour map, three-dimensional wire-frame plans, such as flow field vector graphics, and dynamic display and output the graphics.

基于水流数值模拟后处理的方法与实现，本文以绘制河流冰塞厚度等值线图、冰塞下水流纵向流速等值线图为例，详细介绍了运用Surfer软件绘制各种图形的方法；重点阐述了用VB编程对Surfer软件进行二次开发实现水流数值模拟后处理，显示向Surfer数据文件自动转换的过程；介绍了Active自动化技术及其与VB应用程序的接口技术，并利用该接口技术将VB的强大软件开发能力和Surfer软件强大的绘图功能相结合，给出了实现该接口技术的关键代码以及绘制成果图件的实例：冰盖下流速场纵向流速等值线图、三维线框图、流场矢量图等图形，并输出图形与动态显示。

This paper mainly discusses the theory knowledge of the building ,smoothing ,filling and labeling of isolines and their algorithmic realization, as well as an application of isoline in the explain of geology information system, at last it gives some suggested argument about isoline studys next work.

文章主要讨论了等值线的生成、光滑、填充，标注等内容的理论知识和算法实现，以及等值线在地质资料解释系统中的应用，最后对等值线研究的后续工作进行了建设性的讨论。

Based on the relationship between isolines and borderlines, isolines are classified and ranked, and the isoline areas are constructed.

该算法根据等值线和边界的关系，将等值线分类、排序，构造等值线填充区域。

In order to provide a visual platform for analyzing and making decision, applying the theories and technologies of GIS-based isolines, this paper focuses on the method to generate isolines in urban distribution. Furthermore, a GIS-based urban distribution isoline-generating application is designed and developed.

本文针对城区物流配送实时决策问题，以为物流配送决策提供可视化的GIS分析平台为目标，引入GIS等值线生成原理和分析方法，探讨了城区物流配送系统中的等值线生成方法，设计并开发了城区物流配送等值线生成系统。

In this paper,based mainly on the heights above sea level of the upper limits of the modern dark coniferous forest zones in some mountainous regions and the climatic data obtained from 102 meteorological stations in China,the theoretic altitude of the forest line has been calculated and maps showing the altitude isolines of the forest line,the isolines of height differences between the permafrost limits and the forest line and the isolines of height differences between the modern climatic snowline and the forest line in China have been constructed respectively.

本文主要根据我国一些地区现代暗针叶林带上限的海拔高程和102个气象台站的气象资料，计算出我国的森林线的理论海拔高度，并编绘出我国的森林线高程等值线图以及多年冻土线与森林线高差等值线图和现代气候雪线与森林线高差等值线图。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。