Copies the attributes of the list element specified by the index to become main attributes of the feature.


If this feature enters this transformer:

somelist{0}.length = 7.3

somelist{0}.kind = ’paved’

somelist{1}.length = 8.4

somelist{1}.kind = ’smooth’

somelist{1}.lanes = 2

somelist{2}.length = 1.1

somelist{2}.kind = ’rough’

and the index is set to 2, then the feature leaving the transformer will have these attributes:

length = 1.1

kind = 'rough'

somelist{0}.length = 7.3

somelist{0}.kind = paved

somelist{1}.length = 8.4

somelist{1}.kind = 'smooth'

somelist{1}.lanes = 2

somelist{2}.length = 1.1

somelist{2}.kind = 'rough'

The index may either be entered as a number, or can be taken from the value of a feature attribute by selecting the attribute name from the pull-down list.


Output Ports

Note  Feature order may change in relation to other output ports. Feature order per port is maintained.


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.

Additional Resources

More information about lists

FME Community

The FME Community is the place for demos, how-tos, articles, FAQs, and more. Get answers to your questions, learn from other users, and suggest, vote, and comment on new features.

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