空间连接 =============== 1.描述 ------------ 根据空间关系将一个要素类的属性连接到另一个要素类的属性。目标要素和来自连接要素的被连接属性写入到输出要素类。 2.使用限制 ---------------- 3.算子id ---------------- igis.gis.analysis.overlay.spatial_join 4.参数列表 --------------- +----------+---------------------+------------+--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+ | 参数类型 | 参数名称 | 参数关键字 | 必要性 | 参数说明 | 数据类型 | +----------+---------------------+------------+--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+ | 输入参数 | url | 数据源地址 | Y | 数据源地址 | String | +----------+---------------------+------------+--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+ | | target_features | 目标要素类 | Y | 目标要素的属性和被连接要素的属性被传递到输出要素类。但是，可以在字段映射参数中定义属性的子集 | String | +----------+---------------------+------------+--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+ | | join_features | 连接属性 | Y | 连接要素的属性将被连接到目标要素的属性中。有关连接操作的类型对所连接属性聚合的影响的详细信息 | String | +----------+---------------------+------------+--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+ | | join_operation | 连接方式 | N | 在具有相同空间关系的目标要素和连接要素之间存在一对多关系时，确定输出要素类中目标要素和连接要素之间的连接方式 | String | +----------+---------------------+------------+--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+ | | join_type | 连接类型 | N | 确定是在输出要素类中保留所有目标要素（称为外部连接），还是仅保留那些与连接要素有指定空间关系的目标要素（称为内部连接 | Boolean | +----------+---------------------+------------+--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+ | | field_mapping | 连接属性 | N | 控制输出要素类中要包含的属性字段。初始列表包含目标要素和连接要素中的所有字段。可以添加、删除、重命名字段或更改字段的属性 | String | +----------+---------------------+------------+--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+ | | match_option | 匹配条件 | N | 匹配条件 | String | +----------+---------------------+------------+--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+ | | search_radius | 搜索半径 | N | 果连接要素与目标要素的距离在此范围内，则有可能进行空间连接。仅当将空间关系（匹配选项）指定为 INTERSECT、WITHIN_A_DISTANCE、WITHIN_A_DISTANCE_GEODESIC、HAVE_THEIR_CENTER_IN、CLOSEST 或 CLOSEST_GEODESIC 时，搜索半径才有效。当搜索半径设为 100 米时，使用空间关系 WITHIN_A_DISTANCE 将会连接距离目标要素 100 米以内的要素。对于这三种 WITHIN_A_DISTANCE 关系而言，如果未指定搜索半径的值，则距离将为 0 | String | +----------+---------------------+------------+--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+ | | distance_field_name | 输出字段 | N | 添加到输出要素类中的字段的名称，其中包含目标要素和最近连接要素之间的距离。仅当将空间关系（匹配选项）指定为 CLOSEST 或 CLOSEST_GEODESIC 时，此选项才有效。如果在搜索半径内没有任何匹配的要素，则此字段的值为 -1。如果未指定字段名称，将不会向输出要素类中添加该字段 | String | +----------+---------------------+------------+--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+ | 输出参数 | out_feature_class | 结果图层 | Y | 包含目标要素和连接要素的属性的新要素类。默认情况下，目标要素的所有属性和被连接要素的属性都被写入到输出。但是，可通过字段映射参数来控制要传递的属性集 | String | +----------+---------------------+------------+--------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------+ 5.配置面板 -------------------- 6.调用示例 ------------------ .. code:: { "params": { "url":"kudu://172.20.20.11:7051/geomesa_mc_test", "target_features":"hainan", "join_features":"hainan", "join_operation":"JOIN_ONE_TO_ONE", "field_mapping":"XZDM", "match_option":"INTERSECT", "out_feature_class":"hainan_spatial_join" }, "identifier":"igis.gis.analysis.overlay.spatial_join" }