Creates offset parallel lines on either side of curve features.

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Typical Uses

  • Creating parallel lines to the left, right, or both sides of a curve feature

How does it work?

The OffsetCurveGenerator takes in curve features and creates new curves on either side of the original. These new lines are placed at a specified Offset distance from the original, on the left and right-hand sides. There is a choice of how corners are created - round, mitered, or beveled.

The new offset curves are output as Right and Left, according to the orientation of the original feature.

Two options for Buffer Mode are available. Standard (Fast) can generalize the geometry, producing faster and simpler results. Precise honors the input.



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


Aliases BufferCurveGenerator

FME Community

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