并基于等高线矢量数据建立不规则三角网，再内插格网生成DEM点阵数据。
A triangulated irregular network(TIN) is constructed based on vector data, and DEM point-array data is computed by interpolating grid on TIN.
在遥感与GIS技术的基础上，应用数字高程模型(DEM)生成的格网模型进行洪水的淹没分析。
Based on remote sensing technology the GIS grid model generated by digital elevation model (DEM) is utilized to analyze the flood submergence.
建立格网过程中生成的格网文件是格网内插的前提，为了使格网文件便于解释和应用，需要制订合理的格网文件格式。
The grid file which is produced in the creation of grid is the premise of grid interpolation, and reasonable grid file format should be made for the convenience of interpretation and applications.
实现了基于原始离散点和规则格网点数据的DEM自动生成，并提供了实时检查修改的方案。
We realized DEM automatic generation based on original discrete points and regular control network points and formed a scheme to real time check and correction.
本文详尽地研究这两种构模方法的基础上，采用三角网生长算法生成了地质层面tin，同时利用格网数据生成三角网法实现了地质层面三维可视化。
Based on a detailed research on these two ways, the paper chooses triangle network growth algorithm to build TIN model and utilizes Grid growth triangle network model to build 3d strata.
本文详尽地研究这两种构模方法的基础上，采用三角网生长算法生成了地质层面tin，同时利用格网数据生成三角网法实现了地质层面三维可视化。
Based on a detailed research on these two ways, the paper chooses triangle network growth algorithm to build TIN model and utilizes Grid growth triangle network model to build 3d strata.
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