Logs each feature to the translation log. All attributes and geometry of the feature will be output.
Limits can be placed on both the number of features that will be logged, and the number of coordinates that will be logged per feature.
Input Ports
Input
Features to be logged.
Output Ports
Logged
All logged Input features are output to this port unchanged.
Parameters
Log Message
You can choose to add a message to the log file, which can be useful to identify features if you have many Logger transformers. If present, this message is output to the log file before each feature is logged.
Maximum Logged Coordinates
The number of coordinates to be logged. If not specified, the first 5 and the last 5 coordinates will be logged. If the feature has more than the maximum allowed coordinates, then only a set of coordinates at the beginning and end of the feature will be logged.
If you enter -1, all coordinates will be logged; if you enter 0, no coordinates will be logged.
If any other value is specified, only the first <maxCoords> coordinates will be logged.
Maximum Logged Features
The maximum number of features logged for this message.
If more features than the maximum to be logged enter the transformer, the features over the limit are not logged.
Note: The Workbench parameter Max Features to Log takes precedence over this transformer parameter.
Log Feature Type
The Log Feature Type text will set the feature type of the feature just prior to it being logged. If the log file is being saved, the logged features are also saved in a companion FFS file, and this setting is most useful to control the feature type of the features in this FFS file.
If this parameter is left blank, the feature type is constructed from the preceding transformer's name and output port. This can be useful to determine the origin of features when there are multiple Loggers in a workspace, or multiple connections made to the same Logger. For example, if this line appears in the log:
Feature Type: 'MyCreator_CREATED'
it indicates that the feature was output through the CREATED port of a transformer named "MyCreator".
Usage Notes
- An alternate way to see the attributes and geometries of features is to route them into an Inspector transformer, which will display them in the FME Data Inspector.
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- Null values and strings whose content is "<null>" can be distinguished by a careful reading of the logged attributes. Null values will be logged as "is <null>", whereas strings whose content is "<null>" will be logged as "has value '<null>'".
- To quickly attach Logger transformers: right-click on one or more selected reader feature types and choose Connect Logger.
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.
Transformer Categories
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