Adds a time window attribute to each feature, assigning a Window ID based on either the time the feature arrives at the transformer or a timestamp stored as an attribute.

The duration of a time window is specified with a choice of units (seconds, minutes, hours, or days), and the first window may commence at workspace startup, with the arrival of the first feature, or at a specified timestamp.

The Window ID value may be either:

  • an incremental count of windows (based on the specified duration, starting with zero (0)), or

  • the start or end time of the window (in seconds, Unix time).


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

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