Creates a rectangular polygon that spans the extents of all input features.

Jump to Configuration

Typical Uses

  • Determining the extents of an entire set of features

How does it work?

The BoundingBoxAccumulator receives features with any geometry type and creates the minimum enclosing rectangular polygon that contains all features. The rectangle is not rotated. Its sides are parallel to the x and y axes.

If features are 3D, including point clouds, the bounding box will contain their footprint - that is, their x and y extents.

If an output bounding box has zero area (the bounding box of a single point or vertical line, for example), it will become a point or line as appropriate.

The output bounding box can retain attributes from the input features, either as a single set of attribute values or a list of values from all input features.


Usage Notes

Creating Boxes and Rectangles

Creating rectangular geometry is a common task. These transformers do so in a variety of ways.


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.


Processing Behavior


Feature Holding







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 BoundingBoxAccumulator on the FME Community.


Examples may contain information licensed under the Open Government Licence – Vancouver and/or the Open Government Licence – Canada.