More specifically, ArcExplorer accesses a view that has a (registered) spatial column.
更具体地说,ArcExplorer访问具有(已注册)空间列的视图。
Data access is through reading and writing the data storing in spatial column of layer table.
矢量数据的访问就是对层表中空间数据字段的读写操作。
The derived spatial column, Location, USES the original coordinates: longitude as X, latitude as Y.
派生的空间列location使用原始的坐标:经度作为X,纬度作为Y。
This is accomplished and enforced by registering the spatial column, as done in the last step of Listing 3.
这可以通过像清单3中最后一步那样注册空间列来完成。
You can add more than one spatial index to each spatial column, but you must create them one at a time.
可以为每个空间列添加多个空间索引,但必须一次创建一个。
You can create more than one spatial index for each spatial column, but you must create them one at a time.
可以为每个空间列创建多个的空间索引,但必须每次只创建一个空间索引。
The spatial Extender import procedures allow you to explicitly specify the inline length for the spatial column.
Spatial Extender导入过程允许显式地为空间列指定inlinelength。
The figure below shows a registered spatial column (location in table wells_pts) in the spatial Extender catalog.
下面的图显示Spatial Extender编目中注册的一个空间列(wells_pts中的location)。
The point column is registered as a spatial column using a spatial Extender procedure, associating it with the right SRID.
使用一个Spatial Extender过程将点列注册为空间列,这会将它与正确的SRID关联起来。
Whenever you try to query a spatial column, DB2 injects a transformation from the internal, structured type representation to a representation that can be understood by the application.
每当尝试查询一个空间列时,DB 2加入一个转换,该转换将内部的、结构化类型的表示转换为应用程序能理解的表示。
The deciding factor to determine whether a geometry will be stored as VARCHAR FOR BIT DATA or as BLOB is the so-called inline length that is applicable to a spatial column in any table.
确定几何图形是存储为VARCHAR FORBITDATA还是BLOB的决定因素就是所谓的inlinelength,这个参数适用于任何表中的空间列。
The tokens spatialColumn and query are set in italics to indicate that those represent the spatial column (as identified by function find_spatial_column) and the user-provided query, respectively.
标记spatialColumn和query 被设为斜体,以表明它们分别表示空间列(如函数 find_spatial_column 所标识)和用户提供的查询。
This sounds like a lot of conditions, but so far it is straightforward: using the column, the index can be found and the spatial predicate is known using the function.
这听起来好像有一大堆的条件,但还是比较简单的:通过使用列可以找到索引,通过使用函数可以知道空间谓词。
You will notice that we access four attributes of the spatial data type ST_Geometry directly to not run into trouble with the generated column.
您会注意到,我们直接访问空间数据类型ST_Geometry的4个属性,以避免陷入生成的列的麻烦当中。
The spatial table has a simple structure: a unique, integer column (objectid), one or more columns making up the primary key (copied from the source table), plus a single point-geometry column.
空间表的结构很简单:一个惟一的整数列(objectid),组成主键的一个或多个列(从源表复制的),以及一个点几何列。
This paper discusses a new spatial structure-composite grid slab column structure, which is designed to transform single way force into two-way force to form a spatial forcing system.
现讨论一种新型空间结构—组合式网格板柱结构,它使单向受力变为双向受力,从而形成三维受力体系。
These results indicate that impacts of advection and dispersion on DO vertical transport show spatial differences in the PRE, and influence the DO concentration in the water column.
这表明在珠江口不同区域,垂向的对流扩散作用对溶解氧垂向输运起不同作用,从而影响表底层溶解氧的浓度。
These results indicate that impacts of advection and dispersion on DO vertical transport show spatial differences in the PRE, and influence the DO concentration in the water column.
这表明在珠江口不同区域,垂向的对流扩散作用对溶解氧垂向输运起不同作用,从而影响表底层溶解氧的浓度。
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