基于ArcGIS的地貌晕渲图制作实验分析

Experimental Analysis of the Geomorphic Hill Shading Map Production Based on ArcGIS

晕渲表示的地貌直观、形象,立体感强,并且具备美学效果。介绍了利用ArcGIS软件对数字高程模型数据进行数字地形分析,通过对太阳高度角、方位角以及高程比例参数的实验研究,选择合适的参数来制作山体阴影。通过叠加山体阴影以及对山体进行分层设色,生成立体效果更明显的地貌晕渲图,直观地反映地形地貌的特点,可为中小比例尺地形图中增加晕渲效果提供技术支持。

Geomorphic hill shading map is intuitive,has strong three-dimensional sense and aesthetic effect.This paper introduces the digital terrain analysis of DEM data by using ArcGIS software.Through experimental study of solar elevation angle,azimuth angle and elevation ratio parameter,we select the appropriate parameters to make mountain shadow.By superimposing the shadow of the mountain and layering coloring on the mountain,the geomorphic hill shading map with more obvious three-dimensional effect is produced,which can reflect features of the terrain and landform more intuitively and provide technical support for increasing shading effect in small and medium scale topographic map.