Application: gvSIG desktop

package org.gvsig.raster.lib.buffer.impl.statistics;

import org.gvsig.raster.lib.buffer.api.statistics.StatisticsBand;

/**

 * @author fdiaz

 *

 */

public class MeanOperation implements StatisticalOperation {

    double sigma;

    long n;

    double mean;

    /**

     * Arithmetic mean

     */

    public MeanOperation() {

        sigma = 0;

        n = 0;

    }

    @Override

    public void pre() {

        // do nothing

    }

    @Override

    public void addValue(Number value) {

        sigma += value.doubleValue();

        n++;

    }

    @Override

    public void post() {

        mean = sigma / n;

    }

    @Override

    public Object getResult() {

        return mean;

    }

}