Added a processor to save the free-flow speeds (+ mean + std)

to evaluate the mean and std in the sample.

VadereSimulator/src/org/vadere/simulator/projects/dataprocessing/processor/PedestrianFreeFlowSpeedProcessor.java

+package org.vadere.simulator.projects.dataprocessing.processor;
+
+import org.vadere.annotation.factories.dataprocessors.DataProcessorClass;
+import org.vadere.simulator.control.simulation.SimulationState;
+import org.vadere.simulator.projects.dataprocessing.ProcessorManager;
+import org.vadere.simulator.projects.dataprocessing.datakey.PedestrianIdKey;
+import org.vadere.state.scenario.Pedestrian;
+
+
+import java.util.OptionalDouble;
+import java.util.Set;
+
+/**
+ * @author Marion Gödel
+ * Save free-flow speeds for each pedestrian in the simulation to evaluate how well the sample fits the defined distribution.
+ * In the entry (pedestrianIdKey) "-1" the average is saved
+ * In the entry (pedestrianIdKey) "-2" the std of the samples is saved
+ */
+
+@DataProcessorClass()
+public class PedestrianFreeFlowSpeedProcessor extends DataProcessor<PedestrianIdKey, Double> {
+
+	public PedestrianFreeFlowSpeedProcessor() {
+		super("freeFlowSpeed");
+	}
+
+	@Override
+	protected void doUpdate(final SimulationState state) {
+
+		state.getTopography().getElements(Pedestrian.class)
+				.forEach(ped -> this.update(new PedestrianIdKey(ped.getId()), ped.getFreeFlowSpeed()));
+
+	}
+
+	private void update(PedestrianIdKey pedIdKey, double freeFlowSpeed) {
+		Set<PedestrianIdKey> keys = this.getKeys();
+
+		if (!keys.contains(pedIdKey))
+			this.putValue(pedIdKey, freeFlowSpeed);
+	}
+
+
+	@Override
+	public void postLoop(final SimulationState state) {
+		// save average in -1 entry
+		OptionalDouble meanVal = this.getValues().stream().mapToDouble(a -> a).average();
+		if (meanVal.isPresent()){
+			this.putValue(new PedestrianIdKey(-1), meanVal.getAsDouble());
+		}
+
+		double tmp_sum = this.getValues().stream().mapToDouble(speed -> Math.pow(speed - meanVal.getAsDouble(),2)).sum();
+		double std = Math.sqrt(tmp_sum / (this.getValues().size()-1));
+		this.putValue(new PedestrianIdKey(-2), std);
+	}
+
+	@Override
+	public void init(final ProcessorManager manager) {
+		super.init(manager);
+	}
+
+
+
+}