Feature library

A feature library is a text file with an FXL extension that contains the definitions of feature codes, attributes, linework and symbology, and control codes:

  • Feature codes define the code for types of features, so that features of the same type use the same code.

  • An attribute is a characteristic or property of a feature in a database. All features have a geographic position as an attribute. Other attributes depend on the type of feature. For example, a road has a name or designation number, surface type, width, number of lanes, and so on. The value chosen to describe a particular feature is called the attribute value.

    When you measure a point and select a feature code from the feature library in the Code field, if the feature code has attributes then the Trimble Access software prompts you to enter the attribute data.

  • Linework and symbology define how the feature appears on the map, including line thickness and color. For points, different symbols can be used to represent different point features.

  • Control codes define the relationship between points so that the geometry of a line or polygon is drawn in the map. The easiest way to use control codes to create line, arc, and polygon features in the map as you measure points, or by drawing line and arc features using points already in the job using the CAD toolbar.

If the Use descriptions setting is enabled for the job, you cannot select codes from feature libraries in Description fields. For more information, see Other job settings.