RollingAverageFilter.java

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package com.neuronrobotics.sdk.util;
 
// TODO: Auto-generated Javadoc
public class RollingAverageFilter {
    
    double [] data;
    
    int index = 0;
    
    double average = 0;
    
    public RollingAverageFilter(int size, double startingValue){
        data = new double[size];
        average = startingValue*size;
        for(int i=0;i<size;i++){
            data[i]=startingValue;
        }
    }
    
    public double add(double value){
        average +=value;
        average -=data[index];
        data[index]=value;
        index++;
        if(index==data.length){
            index=0;
        }
        
        return getValue();
    }
    
    public double getValue(){
        return average/data.length;
    }
 
}