基于程序设计的等高线地图着色处理技术

Color Processing Technology of Contour Map based on Programming

传统等高线地图较难直观确定地图信息,为使地图更加形象鲜明,提高公路选线设计效率,引进地形图中用颜色来区别地面高程信息的方法,采用电脑程序设计对等高线进行了着色处理。将普通等高线转变为彩色等高线地图,改善了普通等高线地图的图形界面。用颜色来区分高程大小,色调越冷高程越低,色调越暖高程越高。该着色方法为公路选线提供了便利,经调研统计,在使用彩色等高线地形图进行路线设计的过程中设计人员减少了读图时间,平均提高了30%的工作效率,实用性较强。

Traditional contour map is difficult to determine map information intuitively.In order to make the map more vivid and improve the efficiency of highway route selection design,in this paper,t he method of distinguishing the ground elevation information with color in topographic map is introduced,a nd computer programming is used to color contour lines.The general contour map is transformed into color contour map,which improves the graphic interface of the general contour map.Different colors are used to distinguish elevation.The colder the color is,the lower the elevation is.The warmer the color is,t he higher the elevation is.This coloring method provides convenience for highway route selection.According to the investigation and statistics,in the process of using color contour topographic map for route design,the designer can reduce the reading time and increase the work efficiency by 30%on average,with strong practicability.