To realize searching synoptic situations, a method of drawing contours is introduced, which is based on grid data of regular square matrix.
介绍用规则四方矩阵网格资料绘制等值线，实现天气形势检索的思路方法。
Number theory grid method is suited to the problems of regular geo metric shapes and those of not too more dimensions. Its error is a true error.
数论网格法适用于几何形状规则和维数不太多的问题，它的误差是真正的误差。
Valley extraction based on a regular DEM grid is an important method for terrain analyzing.
基于规则数字高程模型格网的峡谷检测是地形特征分析的重要手段。
Then the method of 3-d terrain modeling based on regular grid is studied.
然后研究了基于规则格网的三维地形建模方法。
For the requirements of creating 3d terrain based on the elevation data which is in the form of regular grid, a kind of modeling method based on weighted average algorithm is proposed.
针对由数字地图等以均匀网格形式给出的高程数据生成真实三维地形的仿真需求，提出了一种基于加权外推算法的地形几何模型。
For the requirements of creating 3d terrain based on the elevation data which is in the form of regular grid, a kind of modeling method based on weighted average algorithm is proposed.
针对由数字地图等以均匀网格形式给出的高程数据生成真实三维地形的仿真需求，提出了一种基于加权外推算法的地形几何模型。
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