Adds a numeric attribute to a feature and assigns a value. Each subsequent feature passing through the transformer receives an incremented value, counting the features.

This transformer can be useful for assigning a unique, numeric ID number to a set of features, for counting the number of features, or for creating a basic histogram for values of a given attribute.

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 and Count Scope is Global, they produce a single count. When multiple Counters have different names, each Counter produces a unique count starting at 0 (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

Counter Name: Counter1 - features numbered 1 - 10

Counter Name: Counter2 - features numbered 1 - 10

Workspace 2

Counter Name: Counter - features numbered 1 - 10

Counter Name: Counter - features numbered 11 - 20

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


Input Ports

Output Ports


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, click beside the applicable parameter. For more information, see Transformer Parameter Menu Options.

Defining Values

There are several ways to define a value for use in a Transformer. The simplest is to simply type in a value or string, which can include functions of various types such as attribute references, math and string functions, and workspace parameters. There are a number of tools and shortcuts that can assist in constructing values, generally available from the drop-down context menu adjacent to the value field.

Dialog Options - Tables

Transformers with table-style parameters have additional tools for populating and manipulating values.

FME Community

The FME Community is the place for demos, how-tos, articles, FAQs, and more. Get answers to your questions, learn from other users, and suggest, vote, and comment on new features.

Search for all results about the Counter on the FME Community.