创建一个特征，其属性包含IFC数量集的定义。从IFC读取器产生的变换器输出的功能类似于IFC读取器所产生的特征。这些功能定义了数量集中的数量的名称和类型。从该变压器输出的功能旨在路由到IFC编写器的数量集DefinInition特征类型。
When writing an IfcQuantitySet or IfcElementQuantity object, the IFC writer will look for a quantity set definition whose name matches the name of the quantity set object. If a match is found, the writer will write out the quantities listed in the definition, taking the values from the quantity set object itself. In this way, quantity set definitions provide the schema for quantity set objects.
这样做是因为FME特征属性无法在IFC数量集所需的详细信息中定义其数据类型。它还允许许多数量集对象共享相同的定义，而不是在每个数量集对象上具有复制的定义信息。
参数
Quantity Set Name
Name
此参数指定正在定义的数量集的名称。
Quantities
Name
The Name column lists the names of the quantities in the quantity set.
Type
This column specifies the data types for the quantities in the quantity set definition. The IFC data model allows quantities to be one of the following measurement types: area, count, length, time, volume or weight.
Editing Transformer Parameters
使用一组菜单选项,变压器参数s can be assigned by referencing other elements in the workspace. More advanced functions, such as an advanced editor and an arithmetic editor, are also available in some transformers. To access a menu of these options, click
除适用的参数旁边。有关更多信息，请参阅Transformer Parameter Menu Options。
Transformer Categories
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