Modifies or creates arc geometry according to new coordinates, angles, radii, or rotation values.

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Typical Uses

  • Modifying arc geometry

  • Converting points to arcs

How does it work?

The ArcPropertySetter receives features with arc or point geometry. Arcs are modified if any values provided in parameters differ from the input geometry. Points are converted to arcs if at least Primary Radius, Start Angle, and Sweep Angle values are provided. The point’s coordinates are used as the arc’s center.

The parameters may modify or create an ellipse as a closed Arc By Center Point or Arc by 3 Points by the following:

  • Center X, Y, and Z coordinates

  • Start and End X, Y, and Z coordinates

  • Primary and Secondary Radius in ground units

  • Rotation in degrees

  • Start Angle and Sweep Angle in degrees

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

Features without valid arc or point geometry will be rejected, as will points that do not have the required parameter values to create an arc.

For more information on arc geometry and types, see Arc.


Usage Notes

  • To extract arc properties to use in expressions, use an ArcPropertyExtractor before the ArcPropertySetter.

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

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Search for all results about the ArcPropertySetter on the FME Community.


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