Takes a set of point, linear, polygonal, and/or aggregate features, and creates a two-dimensional bounding box, which contains all features. The bounding box is defined as the minimum enclosing rectangle for all input features. The minimum rectangle is such that all sides of the rectangle are parallel to the x axis and the y axis. If an output bounding box has zero area, it will become a line or a point.

The input features may be partitioned into groups based on attribute values using the Group By parameter, and one bounding box feature is output for each group. If the Group By parameter is not specified, then all input features will be processed together and a single bounding box will be output.


Group Processing

Attribute Accumulation

Generate List

When enabled, adds a list attribute to the output features, retaining attribute values for multiple input features. A list with the same name is created for traits.


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.

Related Transformers

To retrieve the bounds of a feature into attributes, use the BoundsExtractor.

To replace a feature with its bounding box, use the BoundingBoxReplacer.


FME Community

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Keywords: MBR "minimum bounding rectangle" neatline envelope