摘要
以DEM数据为基础,根据水系自动提取原理和过程,利用A rcG IS模型生成器构造水系自动提取的图解模型,依次实现洼地填充、水流方向计算、汇流累积量计算、矢量河网的生成,从而完成自然水系的一步提取。
Based on DEM data,according to the principle and process of the automatic extraction of water,the article builds the model of the stream automatic extraction used ArcGIS Model Builder.It accomplishes the depressions filling,the calculation of flow direction and flow accumulation,and the generation of vector river-net,so that it can complete extraction of natural stream.
出处
《地下水》
2011年第3期128-130,共3页
Ground water
