摘要
利用窗口分析法在处理栅格DEM数据时的独特优势,分析坡向数据的特性,定义坡向的平均值和标准差这两类基于栅格数据的统计特征,并利用VB编程实现了栅格坡向数据平均值和标准差的提取。
Using the advantages of window analysis method in processing grid DEM, this paper analyzed the characteristics of aspect data,defined the aspect＇s statistical characteristics of Mean and Standard Deviation which is based on grid data. It also realized the extraction of statistical characteristics for aspect based on grid DEM by programming with VB.
出处
《测绘与空间地理信息》
2008年第4期15-17,20,共4页
Geomatics & Spatial Information Technology
基金
国家自然科学基金资助项目(40571120)资助
关键词
数字地形分析
栅格
坡向
统计特征
digital terrain analysis
grid
aspect
statistical characteristic
