org.opentrafficsim.kpi.sampling.indicator.TotalNumberOfStops Maven / Gradle / Ivy

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package org.opentrafficsim.kpi.sampling.indicator;

import java.util.List;

import org.djunits.unit.DimensionlessUnit;
import org.djunits.value.vdouble.scalar.Dimensionless;
import org.djunits.value.vdouble.scalar.Time;
import org.opentrafficsim.kpi.interfaces.GtuData;
import org.opentrafficsim.kpi.sampling.Query;
import org.opentrafficsim.kpi.sampling.Trajectory;
import org.opentrafficsim.kpi.sampling.TrajectoryGroup;

/**
 * Sum of measurements with zero speed, preceded by a non-zero speed.
 * 
 * Copyright (c) 2013-2023 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. 

 * BSD-style license. See OpenTrafficSim License.
 * 
 * @author Alexander Verbraeck
 * @author Peter Knoppers
 * @author Wouter Schakel
 */
public class TotalNumberOfStops extends AbstractIndicator
{

    /** {@inheritDoc} */
    @Override
    protected  Dimensionless calculate(final Query query, final Time startTime,
            final Time endTime, final List> trajectoryGroups)
    {
        int sum = 0;
        for (TrajectoryGroup trajectoryGroup : trajectoryGroups)
        {
            for (Trajectory trajectory : trajectoryGroup.getTrajectories())
            {
                float[] v = trajectory.getV();
                for (int i = 1; i < v.length; i++)
                {
                    if (v[i] == 0 && v[i - 1] > 0)
                    {
                        sum++;
                    }
                }
            }
        }
        return new Dimensionless(sum, DimensionlessUnit.SI);
    }

    /** {@inheritDoc} */
    @Override
    @SuppressWarnings("checkstyle:designforextension")
    public String toString()
    {
        return "TotalNumberOfStops []";
    }

}