/*
* Copyright (C) 2011 Jacquet Wong
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.musicg.math.statistics;
/**
* Evaluate the centroid of an array
*
* @author Jacquet Wong
*
*/
public class DataCentroid extends MathStatistics{
public DataCentroid(){
}
public DataCentroid(double[] values){
setValues(values);
}
public double evaluate(){
double sumCentroid=0;
double sumIntensities=0;
int size=values.length;
for (int i=0; i<size; i++){
if (values[i]>0){
sumCentroid+=i*values[i];
sumIntensities+=values[i];
}
}
double avgCentroid=sumCentroid/sumIntensities;
return avgCentroid;
}
}