Custom data

If trajectory data and detector data, even with ExtendedDataType for trajectories or custom LoopDetectorMeasurment for detectors, is not sufficient, a custom form of data collection should be created. A likely design for this revolves around the internal OTS events. As an example, suppose information on each lane change is required. Then a custom data utility should be set as a listener for Network.GTU_ADD_EVENT and Network.GTU_REMOVE_EVENT. As a response to these events, the utility can be added or removed as a listener to LaneBasedGTU.LANE_CHANGE_EVENT on individual GTUs. As a response to that event, the data utility can store some data for each lane change. Finally, the data utility should also be set up as a listener to SimulatorInterface.END_OF_REPLICATION_EVENT, and as a response to this event the data can be saved. A useful tool to do this is CompressedFileWriter, which is an implementation of a buffered writer from java. It has methods write(…) to add text, newLine() to create a new line, and close() to finalize the writing.