In the study of the method for extracting topographic patterns based on Grid data, including the terrainprofile analysis method and the falling water simulations method.
在研究基于规则格网数据地形特征提取过程中，主要有断面极值法和流水模拟法。
2
In the study of the method for extracting topographic patterns based on Grid data, the author introduces the terrainprofile analysis method and the falling water simulations method.
在研究基于规则格网数据地形特征提取过程中，本人先后介绍了断面极值法和流水模拟法。
3
DEM is basically applied in drawing counter, creating profile, drawing hill-shading map and terrain analysis etc.