Copies existing attributes to new attributes with user-specified names. The existing attribute remains intact and a new attribute is created that has a different name, but the same values.

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Typical Uses

  • Create a copy of an attribute to preserve the original while transforming the copy
  • Create persistent mappings between differing input and output attribute names so that the mapping won’t be lost if a connector is manually removed or replaced.

How does it work?

Blank rows are provided where you can create pairs of input and output attributes. The current values of the input attributes are copied to the output. One or more pairs can be added, and all features that pass through the transformer are modified according to these selections. You can optionally provide default values to be applied to the output where input values are missing.


Usage Notes


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.