GeometryPartExtractor
Extracts or removes selected geometry parts based on a Geometry XQuery.
Note: For information about the FME geometry model, see FME Geometry.
Input Port
Features with geometries.
Output Ports
Features with newly extracted geometry parts in EXTRACT mode or original feature with selected parts removed in REMOVE mode.
Features that were not modified by the transformer.
Parameters
Geometry Part Selection
Use this parameter if you want to isolate only a portion of the geometry passed in to the transformer. If no criteria are specified, the action will apply to the entire geometry at all levels.
Selection can be based on structural location, geometry name, type, appearance information, traits, trait storage types, or definition reference. The syntax used is a restricted set of XQuery, where the return clause is fixed.
The basic Geometry XQuery dialog allows you to construct simple selection queries by automatically writing the necessary query based on specified test clauses. Clicking the Switch to Advanced button opens the Advanced Editor, which allows you to type a query free-form, for more expressive queries.
Note: Once you switch to Advanced mode, you will have to clear all parameters before you can return to Basic mode.
A hierarchical geometry is represented as nodes of type geometry, with attributes containing information about traits, type, and name for each geometry.
Note:
Parameters
- Extract: Extract selected geometry parts into new features
- Remove: Remove selected geometry parts from original feature and return pruned result
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.
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Tags Keywords: GeometryPartRemover