Rounds off attributes with numeric values to the specified number of decimal places. Rounding may be nearest, up, or down.

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Typical Uses

  • Rounding off numeric attribute values for presentation or consistency.

How does it work?

The AttributeRounder accepts any feature. It rounds the selected attribute(s) to the specified number of decimal places, which may be a fixed integer, or set to an attribute or parameter value.

The newly rounded values replace the original values, and all features are output.

Non-numeric values will be passed through unaltered. If rounding is attempted with Decimal Places set to a non-integer value, the features will be Rejected.

Negative Decimal Place integer values may be used to perform rounding to the left of the decimal, rounding to 10s, 100s, 1000s, and so forth.



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



FME Community

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