Takes a series of features that match the input specification and performs snapping on the features that lie within the specified tolerance from other features that match the input specification. You can use this transformer to perform cleaning operations on data during a translation.

The difference between the AnchoredSnapper and the Snapper is that anchor features are considered to be accurate and consequently do not move.

Input Ports

Output Ports




Usage Notes

  • Any feature that undergoes dimensional collapse as a result of being snapped will be logged as "degenerate" and dropped. "Dimensional collapse" refers to a line or area that becomes a point, or an area that becomes a line.
  • A short cleanup step is performed after snapping. This step will remove duplicate points, and may create aggregates to preserve overlapping, directed segments.


FME Licensing Level

FME Base Edition and above

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.

FME Community

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Keywords: FixedSnapper BaseSnapper