List of Transformers

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计数器

Adds a numeric attribute to a feature and assigns a value. Each subsequent feature passing through the transformer receives an incremented value– in other words, the Counter is counting the features.

该变形器可以用于将唯一的数字ID号分配给一组特征，用于计数特征的数量，或用于为给定属性的值创建基本直方图。

Transformer Parameters

ClosedTransformer Name

This parameter is common to most transformers, and you do not always have to edit it to control workspace output. See theUsage Notesbelow for information on why you might want to edit this parameter for the Counter.

ClosedCount Output Attribute

包含结果的属性的名称，并将出现在列表中Outputport attributes.

Closed计数器Name

通过将多个计数器变换器置于具有不同计数器名称的每个计数器变换器或选择其值作为每个特征通过的属性来创建单独的数序列来分配若干计数器。（实际上，使用属性来提供计数器名称就像使用柜台的选项具有组。）

ClosedCount Start

Use this parameter to specify a starting value for the Counter. This is useful for applications where ranges of values have meanings in the problem domain. SeeUsage Notesbelow.

ClosedCount Scope

Specify whether the scope of this counter is Global (throughout the entire workspace) or Local (for this transformer only). Global counters with the same Counter Name will share the same counting sequence, while Local counters will each have a unique counting sequence.

Usage Notes

Using Multiple Counters

Using multiple Counter transformers in a workspace can produce different results. The default behavior of FME is to name all Counters the same.

When multiple Counters have the same name, they produce a single count. When multiple Counters have different names, each Counter produces a unique count starting at 1 (or the number determined by the Count Start parameter). You can rename any Counter by editing the Transformer Name parameter.

For example, there are two workspaces each with two Counters. Ten features passed through each Counter would result in the following:

Workspace 1

计数器Name: Counter1 - features numbered 1 - 10

计数器Name: Counter2 - features numbered 1 - 10

Workspace 2

计数器Name: Counter - features numbered 1 - 10

计数器Name: Counter - features numbered 11 - 20

You can use this feature as needed to produce different results.

Editing Transformer Parameters

Using a set of menu options, transformer parameters 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, clickbeside the applicable parameter. For more information, seeTransformer Parameter Menu Options.

Transformer Categories

Calculated Values

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