Examples with ScheduleDeviationSamples org.onebusaway.transit_data_federation.services.realtime.ScheduleDeviationSamples used on opensource projects

Example 1 with ScheduleDeviationSamples

use of org.onebusaway.transit_data_federation.services.realtime.ScheduleDeviationSamples in project onebusaway-application-modules by camsys.

the class ArrivalAndDepartureServiceImpl method computePredictedDepartureTimeInterval.

private TimeIntervalBean computePredictedDepartureTimeInterval(ArrivalAndDepartureInstance instance, BlockLocation blockLocation, long targetTime) {
    BlockStopTimeEntry blockStopTime = instance.getBlockStopTime();
    StopTimeEntry stopTime = blockStopTime.getStopTime();
    // interval
    if (stopTime.getDepartureTime() <= blockLocation.getEffectiveScheduleTime())
        return null;
    ScheduleDeviationSamples samples = blockLocation.getScheduleDeviations();
    if (samples == null || samples.isEmpty())
        return null;
    double mu = InterpolationLibrary.interpolate(samples.getScheduleTimes(), samples.getScheduleDeviationMus(), stopTime.getDepartureTime(), EOutOfRangeStrategy.LAST_VALUE, EInRangeStrategy.INTERPOLATE);
    double sigma = InterpolationLibrary.interpolate(samples.getScheduleTimes(), samples.getScheduleDeviationSigmas(), stopTime.getDepartureTime(), EOutOfRangeStrategy.LAST_VALUE, EInRangeStrategy.INTERPOLATE);
    long from = (long) (instance.getScheduledDepartureTime() + (mu - sigma) * 1000);
    long to = (long) (instance.getScheduledDepartureTime() + (mu + sigma) * 1000);
    return new TimeIntervalBean(from, to);
}

Example 2 with ScheduleDeviationSamples

use of org.onebusaway.transit_data_federation.services.realtime.ScheduleDeviationSamples in project onebusaway-application-modules by camsys.

the class ArrivalAndDepartureServiceImpl method computePredictedArrivalTimeInterval.

private TimeIntervalBean computePredictedArrivalTimeInterval(ArrivalAndDepartureInstance instance, BlockLocation blockLocation, long targetTime) {
    BlockStopTimeEntry blockStopTime = instance.getBlockStopTime();
    StopTimeEntry stopTime = blockStopTime.getStopTime();
    // interval
    if (stopTime.getArrivalTime() <= blockLocation.getEffectiveScheduleTime())
        return null;
    ScheduleDeviationSamples samples = blockLocation.getScheduleDeviations();
    if (samples == null || samples.isEmpty())
        return null;
    double mu = InterpolationLibrary.interpolate(samples.getScheduleTimes(), samples.getScheduleDeviationMus(), stopTime.getArrivalTime(), EOutOfRangeStrategy.LAST_VALUE, EInRangeStrategy.INTERPOLATE);
    double sigma = InterpolationLibrary.interpolate(samples.getScheduleTimes(), samples.getScheduleDeviationSigmas(), stopTime.getArrivalTime(), EOutOfRangeStrategy.LAST_VALUE, EInRangeStrategy.INTERPOLATE);
    long from = (long) (instance.getScheduledArrivalTime() + (mu - sigma) * 1000);
    long to = (long) (instance.getScheduledArrivalTime() + (mu + sigma) * 1000);
    return new TimeIntervalBean(from, to);
}

Example 3 with ScheduleDeviationSamples

use of org.onebusaway.transit_data_federation.services.realtime.ScheduleDeviationSamples in project onebusaway-application-modules by camsys.

the class RealTimeHistoryServiceImpl method sampleScheduleDeviationsForVehicle.

@Override
public ScheduleDeviationSamples sampleScheduleDeviationsForVehicle(BlockInstance instance, VehicleLocationRecord record, ScheduledBlockLocation scheduledBlockLocation) {
    if (scheduledBlockLocation == null)
        return null;
    BlockTripEntry blockTrip = scheduledBlockLocation.getActiveTrip();
    TripEntry trip = blockTrip.getTrip();
    ScheduleDeviationHistory history = _scheduleDeviationHistoryDao.getScheduleDeviationHistoryForTripId(trip.getId());
    if (history == null)
        return null;
    ScheduleDeviationHistory resampledHistory = resampleHistory(history, scheduledBlockLocation.getScheduledTime(), record.getScheduleDeviation());
    DoubleArrayList scheduleTimes = new DoubleArrayList();
    DoubleArrayList mus = new DoubleArrayList();
    DoubleArrayList sigmas = new DoubleArrayList();
    for (int t = 0; t <= _predictionLookahead; t += 5 * 60) {
        int scheduleTime = scheduledBlockLocation.getScheduledTime() + t;
        double[] deviations = getScheduleDeviationsForScheduleTime(resampledHistory, scheduleTime);
        deviations = noNans(deviations);
        DoubleArrayList values = new DoubleArrayList(deviations);
        double mu = Descriptive.mean(values);
        double var = Descriptive.sampleVariance(values, mu);
        double sigma = Descriptive.sampleStandardDeviation(values.size(), var);
        scheduleTimes.add(scheduleTime);
        mus.add(mu);
        sigmas.add(sigma);
    }
    scheduleTimes.trimToSize();
    mus.trimToSize();
    sigmas.trimToSize();
    return new ScheduleDeviationSamples(scheduleTimes.elements(), mus.elements(), sigmas.elements());
}

Example 4 with ScheduleDeviationSamples

use of org.onebusaway.transit_data_federation.services.realtime.ScheduleDeviationSamples in project onebusaway-application-modules by camsys.

the class BlockLocationServiceImpl method getBlockLocation.

/**
 * @param blockInstance
 * @param cacheElements
 * @param scheduledLocation
 * @param targetTime
 * @return null if the effective scheduled block location cannot be determined
 */
private BlockLocation getBlockLocation(BlockInstance blockInstance, VehicleLocationCacheElements cacheElements, ScheduledBlockLocation scheduledLocation, long targetTime) {
    BlockLocation location = new BlockLocation();
    location.setTime(targetTime);
    location.setBlockInstance(blockInstance);
    VehicleLocationCacheElement cacheElement = null;
    if (cacheElements != null)
        cacheElement = cacheElements.getElementForTimestamp(targetTime);
    if (cacheElement != null) {
        VehicleLocationRecord record = cacheElement.getRecord();
        if (scheduledLocation == null)
            scheduledLocation = getScheduledBlockLocationForVehicleLocationCacheRecord(blockInstance, cacheElement, targetTime);
        if (scheduledLocation != null) {
            location.setEffectiveScheduleTime(scheduledLocation.getScheduledTime());
            location.setDistanceAlongBlock(scheduledLocation.getDistanceAlongBlock());
        }
        location.setBlockStartTime(record.getBlockStartTime());
        location.setPredicted(true);
        location.setLastUpdateTime(record.getTimeOfRecord());
        location.setLastLocationUpdateTime(record.getTimeOfLocationUpdate());
        location.setScheduleDeviation(record.getScheduleDeviation());
        location.setScheduleDeviations(cacheElement.getScheduleDeviations());
        if (record.isCurrentLocationSet()) {
            CoordinatePoint p = new CoordinatePoint(record.getCurrentLocationLat(), record.getCurrentLocationLon());
            location.setLastKnownLocation(p);
        }
        location.setOrientation(record.getCurrentOrientation());
        location.setPhase(record.getPhase());
        location.setStatus(record.getStatus());
        location.setVehicleId(record.getVehicleId());
        List<TimepointPredictionRecord> timepointPredictions = record.getTimepointPredictions();
        location.setTimepointPredictions(timepointPredictions);
        if (timepointPredictions != null && !timepointPredictions.isEmpty()) {
            SortedMap<Integer, Double> scheduleDeviations = new TreeMap<Integer, Double>();
            BlockConfigurationEntry blockConfig = blockInstance.getBlock();
            int tprIndexCounter = 0;
            for (TimepointPredictionRecord tpr : timepointPredictions) {
                AgencyAndId stopId = tpr.getTimepointId();
                long predictedTime;
                if (tpr.getTimepointPredictedDepartureTime() != -1) {
                    predictedTime = tpr.getTimepointPredictedDepartureTime();
                } else {
                    predictedTime = tpr.getTimepointPredictedArrivalTime();
                }
                if (stopId == null || predictedTime == 0)
                    continue;
                for (BlockStopTimeEntry blockStopTime : blockConfig.getStopTimes()) {
                    StopTimeEntry stopTime = blockStopTime.getStopTime();
                    StopEntry stop = stopTime.getStop();
                    // StopSequence equals to -1 when there is no stop sequence in the GTFS-rt
                    if (stopId.equals(stop.getId()) && stopTime.getTrip().getId().equals(tpr.getTripId()) && (tpr.getStopSequence() == -1 || stopTime.getSequence() == tpr.getStopSequence())) {
                        if (tpr.getStopSequence() == -1 && isFirstOrLastStopInTrip(stopTime) && isLoopRoute(stopTime)) {
                            if (isSinglePredictionForTrip(timepointPredictions, tpr, tprIndexCounter)) {
                                continue;
                            }
                            // If this isn't the last prediction, and we're on the first stop, then apply it
                            if (isLastPrediction(stopTime, timepointPredictions, tpr, tprIndexCounter) && isFirstStopInRoute(stopTime)) {
                                // Do not calculate schedule deviation
                                continue;
                            }
                            // If this is the last prediction, and we're on the last stop, then apply it
                            if (isFirstPrediction(stopTime, timepointPredictions, tpr, tprIndexCounter) && isLastStopInRoute(stopTime)) {
                                // Do not calculate schedule deviation
                                continue;
                            }
                        }
                        int arrivalOrDepartureTime;
                        // We currently use the scheduled arrival time of the stop as the search index
                        // This MUST be consistent with the index search in ArrivalAndSepartureServiceImpl.getBestScheduleDeviation()
                        int index = stopTime.getArrivalTime();
                        if (tpr.getTimepointPredictedDepartureTime() != -1) {
                            // Prefer departure time, because if both exist departure deviations should be the ones propagated downstream
                            arrivalOrDepartureTime = stopTime.getDepartureTime();
                        } else {
                            arrivalOrDepartureTime = stopTime.getArrivalTime();
                        }
                        int deviation = (int) ((predictedTime - blockInstance.getServiceDate()) / 1000 - arrivalOrDepartureTime);
                        scheduleDeviations.put(index, (double) deviation);
                    }
                }
                tprIndexCounter++;
            }
            double[] scheduleTimes = new double[scheduleDeviations.size()];
            double[] scheduleDeviationMus = new double[scheduleDeviations.size()];
            double[] scheduleDeviationSigmas = new double[scheduleDeviations.size()];
            int index = 0;
            for (Map.Entry<Integer, Double> entry : scheduleDeviations.entrySet()) {
                scheduleTimes[index] = entry.getKey();
                scheduleDeviationMus[index] = entry.getValue();
                index++;
            }
            ScheduleDeviationSamples samples = new ScheduleDeviationSamples(scheduleTimes, scheduleDeviationMus, scheduleDeviationSigmas);
            location.setScheduleDeviations(samples);
        }
    } else {
        if (scheduledLocation == null)
            scheduledLocation = getScheduledBlockLocationForBlockInstance(blockInstance, targetTime);
    }
    /**
     * Will be null in the following cases:
     *
     * 1) When the effective schedule time is beyond the last scheduled stop
     * time for the block.
     *
     * 2) When the effective distance along block is outside the range of the
     * block's shape.
     */
    if (scheduledLocation == null)
        return null;
    // if we have route info, set the vehicleType
    if (scheduledLocation.getActiveTrip() != null && scheduledLocation.getActiveTrip().getTrip() != null && scheduledLocation.getActiveTrip().getTrip().getRoute() != null) {
        location.setVehicleType(EVehicleType.toEnum(scheduledLocation.getActiveTrip().getTrip().getRoute().getType()));
    }
    location.setInService(scheduledLocation.isInService());
    location.setActiveTrip(scheduledLocation.getActiveTrip());
    location.setLocation(scheduledLocation.getLocation());
    location.setOrientation(scheduledLocation.getOrientation());
    location.setScheduledDistanceAlongBlock(scheduledLocation.getDistanceAlongBlock());
    location.setClosestStop(scheduledLocation.getClosestStop());
    location.setClosestStopTimeOffset(scheduledLocation.getClosestStopTimeOffset());
    location.setNextStop(scheduledLocation.getNextStop());
    location.setNextStopTimeOffset(scheduledLocation.getNextStopTimeOffset());
    location.setPreviousStop(scheduledLocation.getPreviousStop());
    return location;
}

Example 5 with ScheduleDeviationSamples

use of org.onebusaway.transit_data_federation.services.realtime.ScheduleDeviationSamples in project onebusaway-application-modules by camsys.

the class BlockLocationServiceImpl method handleVehicleLocationRecord.

/**
 **
 * {@link BlockVehicleLocationListener} Interface
 ***
 */
@Override
public void handleVehicleLocationRecord(VehicleLocationRecord record) {
    BlockInstance instance = getVehicleLocationRecordAsBlockInstance(record);
    if (instance != null) {
        ScheduledBlockLocation scheduledBlockLocation = getScheduledBlockLocationForVehicleLocationRecord(record, instance);
        if (!record.isScheduleDeviationSet()) {
            int deviation = (int) ((record.getTimeOfRecord() - record.getServiceDate()) / 1000 - scheduledBlockLocation.getScheduledTime());
            record.setScheduleDeviation(deviation);
        }
        ScheduleDeviationSamples samples = null;
        if (_sampleScheduleDeviationHistory == true) {
            samples = _realTimeHistoryService.sampleScheduleDeviationsForVehicle(instance, record, scheduledBlockLocation);
        }
        putBlockLocationRecord(instance, record, scheduledBlockLocation, samples);
    }
}