Replaces or creates feature geometry with a 2D ellipse as defined in parameters for center point, radii, and rotation.  

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Typical Uses

  • Creating ellipse or circle geometry from attribute values or user parameters

  • Replacing point geometry with ellipses or circles defined by values

How does it work?

The 2DEllipseReplacer receives features of any kind and replaces their geometry with ellipses as defined in parameters.

The parameters describe an ellipse as a closed Arc By Center Point by the following:

  • Center X and Y coordinates

  • Primary and Secondary Axis (radii) in ground units

  • Rotation in degrees

  • An assumed sweep of 360 degrees

Values may be entered or provided through attribute values, expressions, or user parameters.

If the feature has point or ellipse geometry, and Center X and Y are left blank, the coordinates of the feature’s existing geometry will be used. If the feature has no geometry or geometry other than point or ellipse, the feature is rejected.

For more information on ellipse geometry see Ellipse.


Usage Notes

  • To create circles around point features, consider using a Bufferer.

Creating and Modifying Arcs, Circles, and Ellipses

These transformers work with arcs 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

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 2DEllipseReplacer on the FME Community.


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