在实际的GIS空间分析过程中，为了更加简便快捷的实现某些特定的空间分析功能，常常需要将不规则的矢量多边形区域转化为规则的格网区域。

For the sake of realizing some special functions in spatial analysis of GIS, it is necessary to covert irregular vector polygon into regular grid.

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然后将其转化成可编辑多边形或者添加编辑多边形修改器，让墙壁的底部变成地板。

After extruding convert the object to Editable Poly or apply Edit Poly modifier to make bottom of the wall fluently become a floor.

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