Replaces area geometries with their centerlines or straight skeletons. This transformer works best with long, narrow areas.

Output Ports



Usage Notes

  • Input areas must not self-cross and the region covered by the area must be connected.
  • Z coordinates are ignored by this transformer. All centerlines are 2D.




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

When combined with the Tester, this transformer enables FME to perform area generalization operations.


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 samples and information about this transformer on the FME Community.

Keywords: abstraction simplification simplify centerline centreline CentreLineReplacer