AreaAmalgamator

Polygonal geometries, including donuts. The polygonal geometries may overlap and share boundaries. However, each geometry should be valid (that is, not self-intersecting or non-planar).

Amalgams computed from input polygonal geometries.

输入多边形几何形状未被有效的三角形连接器触摸。

Holes in the amalgams whose areas exceed the Minimum Hole Area parameter.

Triangles that form the valid connectors joining input polygonal geometries.

非多边形输入。偶尔，如果满足意外情况，则会将一些无效的中间结果发布到此端口。

通过指定一个或多个组的属性input polygonal features will be partitioned into groups and the amalgamation process will be executed separately on each group. Within each group, all features will have the same values for the selected Group By attributes.

If no Group By attributes are selected, a single group will be formed containing all input polygonal features. By default, no Group By attributes are selected.

Note:How parallel processing works with FME: seeAbout Parallel Processing有关详细信息。

此参数确定变压器是否应跨行进程执行工作。如果启用了，将为每个组的组启动一个过程Group Byparameter.

并行处理水平

For example, on a quad-core machine, minimal parallelism will result in two simultaneous FME processes. Extreme parallelism on an 8-core machine would result in 16 simultaneous processes.

You can experiment with this feature and view the information in the Windows Task Manager and the Workbench Log window.

No: This is the default behavior. Processing will only occur in this transformer once all input is present.

By Group: This transformer will process input groups in order. Changes on the value of theGroup Byparameter on the input stream will trigger batch processing on the currently accumulating group. This will improve overall speed if groups are large/complex, but could cause undesired behavior if input groups are not truly ordered.

This parameter controls the mode of amalgamation. The AreaAmalgamator is conceptually a binary operator that causes two nearby geometrical details to connect together. However, two geometrical details may be on the same geometry. Imagine two peninsulas protruding from the same coast line, or two different geometries, such as two neighboring islands. Therefore, a number of options are provided here to accommodate the two conceptual models:

• Self Amalgamation: This mode amalgamates a polygonal geometry against itself. It would handle the two peninsulas case, but not the two neighboring islands case.
• Binary Amalgamation（默认）：此模式合并不同的多边形几何形状。它将处理两个邻近的岛屿案例，但不是两个半岛案例。
• 自我，二元融合: This mode combines theSelf Amalgamationand theBinary Amalgamation。它将处理两个半岛案例和两个邻近岛屿案例。

Input	输出: Amalgamated
	Self Amalgamation
	Binary Amalgamation
	自我，二元融合

This parameter controls whether input polygonal features are dissolved up front. The default value is Yes.

• Yes：此值溶解输入多边形功能。BoyAmalgamator是假设输入功能不重叠的假设。此值强制执行该假设。溶解输入前面还提供可能不重叠的输入多边形特征，但由于精度有限，其共享边界在致密化步骤后变得重叠。由于精度有限的重叠可以降低大区扩张器的性能。
• No: This value is meant for advanced users who want finer control of the AreaAmalgamator. Some users would rather not dissolve the input to improve performance because in some cases, not dissolving the input will not cause undesirable side effects.

Overlapping Input	Dissolve Input: Yes 融合模式:二进制	溶解输入：没有 融合模式:二进制
解释	The input dissolves into one polygon, thus the Binary mode causes the one polygon not to amalgamate.	The input is not dissolved, thus the Binary mode causes the two input features to amalgamate, but because overlapping features were not dissolved, a hole results in the middle of the amalgam.

Overlapping Input	Dissolve Input: Yes 合并模式：自我	溶解输入：没有 合并模式：自我
解释	The input dissolves into one polygon, thus the Self mode causes the one polygon to amalgamate.	The input is not dissolved, thus the Self mode causes the two input features not to amalgamate.

此参数控制形成连接器的三角形的宽度。三角形的宽度是其基础的宽度，其入射在输入多边形几何形状的边界上（参见下图）。它的价值越大，三角形的宽更宽。

In terms of triangle count, decreasing this value generally increases (and will not decrease) the number of triangles generated. In terms of performance, having this value set too low could cause significant slowdowns. In terms of the appearance of the triangle connectors, having this value set too high could result in coarse looking connectors that appear skewed in shape.

Note:Tip: set the value of this parameter as high as possible, given that the amalgamated output still looks good to the eye.

More rigorously, after the input polygonal geometries are dissolved, extra vertices are added through a densification process. The densification interval controls the widths of triangles created. This parameter specifies the length of the densification interval.

This parameter controls the lengths of triangles that form the connectors. The length of the triangle is defined by the length of its longest side (see figure below). This value should not be less than the最大三角形宽度。The larger its value, the farther apart two input polygons can be and still be connected together by triangles in the formation of amalgams.

在三角形计数方面，降低该值通常会降低（并且不会增加）生成的三角形的数量。该值的变化预计不会对性能产生重大影响。就三角形连接器的外观而言，该值设置得太高可能导致输入多边形作为单个Amalgam输出。

这个参数控制孔应消除的inated from the amalgams. The larger its value, the larger the remaining holes will be. In terms of hole count, decreasing this value generally increases (and will not decrease) the number of holes remaining in the amalgams.

此参数指定Amalgams的列表属性的名称。对于每个Amalgam，此列表将包含每个输入功能的条目，其多边形几何形状与Amalgam共享边界。输入功能中的所有属性都记录在列表条目中，除了以前缀为前缀的特征级别属性fme_。

Note:List attributesare not accessible from the output schema in Workbench unless they are first processed using a transformer that operates on them, such asListExploderorListConcatenator。All list attribute transformers are displayed in the Contents pane of the Transformer Help underLists。或者，AttributeExposer可以使用。

This parameter specifies the name of a unique identifier for the amalgams. If specified, each amalgam will receive an ID value that is unique across groups. All triangles and holes contained in an amalgam will receive the same ID as that amalgam.