Brings end points or vertex points of features together if they are within a certain distance of each other and (optionally) if they have one or more attributes in common.
The difference between the AnchoredSnapper and the Snapper is that anchor features are considered to be accurate and consequently do not move.
If Group By attributes are selected, features are only snapped to other features with the same values in the group by attributes.
When this parameter is set to End Point Snapping, the transformer:
When two features are snapped together, the feature that entered the factory most recently is the one that is modified.
When this parameter is set to Vertex Snapping, the transformer does the following:
When two features are snapped together, the feature that entered the factory most recently is the one that is modified.
Snapping Tolerance specifies the distance, in ground units, that the snapping occurs between features.
This parameter applies only when the end point of a feature is being snapped. It controls how lines are modified when they are snapped.
Any features entering the transformer whose length is less than or equal to the tolerance will be treated specially: they will be output as UNTOUCHED, and other features (but not other short features) will be able to snap to them. If the option is not selected, features like this will collapse to a single point and will be dropped.
If the Advanced setting Geometry Handling is set to Enhanced in the workspace, arcs are snapped as linear features, and ellipses are not snapped; otherwise, arcs and ellipses are both snapped as point features located at their respective center points.
A short cleanup step is performed after snapping. This step will remove duplicate points, and may create aggregates to preserve overlapping, directed segments.
Any feature that undergoes dimensional collapse as a result of being snapped will be logged as "degenerate" and dropped. Dimensional collapse refers to a line or area that becomes a point, or an area that becomes a line.
About Transformer Parameter Options
FME Base edition and above
Search for samples and information about this transformer on FMEpedia.