Extracts a feature’s minimum and maximum coordinate values into attributes.

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Typical Uses

  • Determining a feature’s extents as attribute values instead of geometry.

How does it work?

The BoundsExtractor receives features with any type of geometry and individually extracts their minimum and maximum x, y, and z coordinate values, storing them as attributes.

Where coordinate values do not exist (such as z values on 2D geometry or non-spatial features) a value of zero (0) is assigned.

To exclude an attribute, leave the parameter blank and it will not be added to the output features.

Feature geometry is unchanged.


Usage Notes

  • Point cloud extents need to be recalculated after some operations. Consider using the PointCloudPropertyExtractor and its Calculate and Update Extents parameter instead.

  • To extract minimum and maximum values on attributes, use the StatisticsCalculator.

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


Dependencies None

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