Constructing Attributes

Besides constant attribute values, FME also allows you to build values using string manipulation and arithmetic calculations. This is achieved using the menu opened by clicking on the arrow in the Attribute Value field:

This capability is very useful because an attribute is no longer a fixed value: it can be constructed from a mix of existing attributes and parameters. The two methods are the Text Editor and Arithmetic Editor.

The string functions are mostly based around Tcl, the arithmetic functions around C.

Professor Lynn Guistic says…
Remember that besides existing to construct attributes, the text and arithmetic editors can be applied on most FME parameters. You wouldn't, for example, have to use the AttributeManager arithmetic editor to create an attribute to then use in the 3DForcer transformer; you could instead use the arithmetic editor directly in the 3DForcer itself.

Miss Vector says...
Do you know which transformers can be used to create attributes? Select all that apply:

1. AttributeCopier
2. AttributeCreator
3. AttributeManager
4. AttributeRenamer

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