As raster grid networks of digital elevation model in GIS can be used as the finite difference mesh, the continuity and momentum equations are solved numerically using the finite difference method.
由于GIS中的栅格网络数据可以直接作为有限差分的网格，二维数值模型可用有限差分来求解。
Raster data is non-geometric data defined by a grid of values covering a spatial area.
光栅数据是由覆盖空间区域的网格值所定义的非几何数据。
Taking a 10-meter-by-10-meter grid and making one observation for each intersection (100 observations) would constitute a raster dataset.
比如 10 米乘 10 米的网格，取每个交叉点的值（共有 100组）就形成一个光栅数据集。
Note: When dissolving a raster (grid) you will be asked to select a Clumping Method.
注意：在解散栅格（网格）时会提示选择一种聚簇方法。
Checking geometry and the congruency of raster, by means of an electronically generated grid, if necessary.
检查几何形状和光栅的一致性，如果有必要用电子生成网格的装置。
Therefore may (Raster Calculator) further transform a reality minute number which through the grid calculator it marches forward needs.
因此可以通过栅格计算器（RasterCalculator）将其进一步转换成行进所需的实际分钟数。
Raster DEM grid search method is to obtain the riverbed thalweg through a two-dimensional matrix search with a certain height rules.
栅格DEM搜索法是通过二维高程矩阵按照一定规则进行搜索，获取河床深泓线；
Raster DEM grid search method is to obtain the riverbed thalweg through a two-dimensional matrix search with a certain height rules.
栅格DEM搜索法是通过二维高程矩阵按照一定规则进行搜索，获取河床深泓线；
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